Vauxhall Workshop Service and Repair Manuals

Test

Work Order Description

Nominal Value

Check: Short to Voltage/Ground/Interruption of Voltage Supply

• Ignition OFF
• Disconnect wiring harness connector from:
  B18 Sensor - Pressure, Air Conditioning
• Ignition ON
• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  Ground

4.8 ... 5.2 V

Check: Short to Voltage/Interruption of Ground Circuit

• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2

4.8 ... 5.2 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System EDC 16C9, Z 17 DTL, Z 17 DTH
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System EDC 16C9, Z 17 DTL, Z 17 DTH
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Short to Ground/Interruption of Signal Circuit

• Check the following component for proper operation:
  Fuse of the fused jumper wire

Test okay?

Check: Interruption of Signal Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Measure resistance between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 39 (XC2) (Z 16 XEP) 4 (XC10) (Z 18 XE) 7 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 39 (XC8) (Z 17 DTL) (Z 17 DTH) 13 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 13 (XC53) (Z 13 DTH) 87 (XC20) (Z 18 XER) 56 (XC4) (Z 16 XE1) 4 (XC10) (Z 16 XER) 56 (XC100) (Z 16 LET) (A 16 LET) 39 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 29 (XC96) (Z 22 YH) 59 (XC55)

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Ground of Signal Circuit

• Remove fused jumper wire
• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Measure resistance between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
  &
  Ground

greater than 500 kOhm

Check: Short to Voltage of Signal Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Ignition ON
• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
  &
  Ground

less than 0.3 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Motronic 7.6.1. Z 12 XEP, Z 14 XEP, Z 14 XEL
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Motronic 7.6.1. Z 12 XEP, Z 14 XEP, Z 14 XEL
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Multec S (F), Z 16 XEP, Z 16 XE1
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Multec S (F), Z 16 XEP, Z 16 XE1
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Simtec 71.6, Z 18 XE
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Simtec 71.6, Z 18 XE
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Motronic 7.6.1, Z 20 LEH, Z 20 LEL, Z 20 LER
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Motronic 7.6.1, Z 20 LEH, Z 20 LEL, Z 20 LER
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System EDC 16C9/16C39, Z 19 DT, Z 19 DTH, Z 19 DTL
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System EDC 16C9/16C39, Z 19 DT, Z 19 DTH, Z 19 DTL
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System Multijet 6JO, Z 13 DTH
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System Multijet 6JO, Z 13 DTH
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Simtec 75, Z 18 XER
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Simtec 75, Z 18 XER
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Simtec 75, Z 16 XER
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Simtec 75, Z 16 XER
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Motronic 7.6.2, A 16 LET, Z 16 LET
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Motronic 7.6.2, Z 16 LET
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System DECE1C, A 17 DTJ, A 17 DTR, Z 17 DTJ, Z 17 DTR
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Electronic Diesel Injection System DECE1C, A 17 DTJ, A 17 DTR, Z 17 DTJ, Z 17 DTR
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Select the following Functional System on the diagnostic tester:
  Simtec 81, Z 22 YH
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Connect fused jumper wire to:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3
• Select the following Functional System on the diagnostic tester:
  Simtec 81, Z 22 YH
• Diagnostic Tester Data List Parameter
  A/C Pressure (Air Conditioning)

greater than 4.8 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Circuit Interruption of Ground Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Measure resistance between the following terminals:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 16 XEP) 34 (XC10) (Z 18 XE) 34 (XC4) (Z 17 DTL) (Z 17 DTH) 12 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 12 (XC53) (Z 13 DTH) 10 (XC20) (Z 18 XER) 39 (XC4) (Z 16 XE1) 34 (XC10) (Z 16 XER) 39 (XC100) (Z 17 DTJ) (Z 17 DTR) (A 17 DTJ) (A 17 DTR) 16 (XC96) (Z 22 YH) 11 (XC55)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage/Interruption of Ground Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  B22 Sensor - Pedal Position
• Ignition ON
• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2

4.8 ... 5.2 V

Check: Circuit Interruption of Ground Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Measure resistance between the following terminals:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 5 (XC2) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 5 (XC8) (Z 16 LET) (A 16 LET) 5 (XC98)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage/Interruption of Ground Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  B22 Sensor - Pedal Position
• Ignition ON
• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2

4.8 ... 5.2 V

Check: Short to Voltage/Ground/Interruption of Voltage Supply

• Ignition OFF
• Disconnect wiring harness connector from:
  B18 Sensor - Pressure, Air Conditioning
• Ignition ON
• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  Ground

greater than 5.2 V

Check: Short to Voltage of Voltage Supply Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Ignition ON
• Measure voltage between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  Ground

less than 0.3 V

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
• Measure resistance between the following terminals:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2
  &
  Ground

greater than 500 kOhm

Check: Interruption of Voltage Supply Circuit

• Measure resistance between the following terminals:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 53 (XC2) (Z 16 XEP) 3 (XC10) (Z 18 XE) 23 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 53 (XC8) (Z 17 DTH) (Z 17 DTL) 22 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 22 (XC53) (Z 13 DTH) 37 (XC20) (Z 18 XER) 23 (XC4) (Z 16 XE1) 3 (XC10) (Z 16 XER) 23 (XC100) (Z 16 LET) (A 16 LET) 53 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 42 (XC96) (Z 22 YH) 35 (XC55)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 2 (Z 16 XEP) 2 (Z 18 XE) 2 (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 2 (Z 17 DTH) (Z 17 DTL) 2 (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 2 (Z 13 DTH) 2 (Z 18 XER) 2 (Z 16 XE1) 2 (Z 16 XER) 2 (Z 16 LET) (A 16 LET) 2 (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 2 (Z 22 YH) 5

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

less than 5 Ohm

Result

Cause Of Fault

• Defective component:
  B18 Sensor - Pressure, Air Conditioning

• Defective component:
  A84 Control Unit - Engine
  or
  A1_A14 Control Unit - Climate Control

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

Note:

The replacement of the components must be done in the listed order.

The system must be checked for proper operation after every replacement.

• Defective component:
  A84 Control Unit - Engine

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• Circuit interruption between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 39 (XC2) (Z 16 XEP) 4 (XC10) (Z 18 XE) 7 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 39 (XC8) (Z 17 DTL) (Z 17 DTH) 13 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 13 (XC53) (Z 13 DTH) 87 (XC20) (Z 18 XER) 56 (XC4) (Z 16 XE1) 4 (XC10) (Z 16 XER) 56 (XC100) (Z 16 LET) (A 16 LET) 39 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 29 (XC96) (Z 22 YH) 59 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 8 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 30 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• Short circuit to ground between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 39 (XC2) (Z 16 XEP) 4 (XC10) (Z 18 XE) 7 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 39 (XC8) (Z 17 DTL) (Z 17 DTH) 13 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 13 (XC53) (Z 13 DTH) 87 (XC20) (Z 18 XER) 56 (XC4) (Z 16 XE1) 4 (XC10) (Z 16 XER) 56 (XC100) (Z 16 LET) (A 16 LET) 39 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 29 (XC96) (Z 22 YH) 59 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 8 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 30 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• Short circuit to voltage between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 39 (XC2) (Z 16 XEP) 4 (XC10) (Z 18 XE) 7 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 39 (XC8) (Z 17 DTH) (Z 17 DTL) 13 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 13 (XC53) (Z 13 DTH) 87 (XC20) (Z 18 XER) 56 (XC4) (Z 16 XE1) 4 (XC10) (Z 16 XER) 56 (XC100) (Z 16 LET) (A 16 LET) 39 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 29 (XC96) (Z 22 YH) 59 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 8 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 30 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 3

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• The selected Checking Procedure is not valid for this vehicle configuration.

• Short circuit to voltage between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 17 DTL) (Z 17 DTH) 12 (XC12) (Z 16 XEP) 34 (XC10) (Z 18 XE) 34 (XC4) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 12 (XC53) (Z 13 DTH) 10 (XC20) (Z 18 XER) 39 (XC4) (Z 16 XE1) 34 (XC10) (Z 16 XER) 39 (XC100) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 16 (XC96) (Z 22 YH) 11 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 7 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1

or

• Defective component:
  A84 Control Unit - Engine
  or
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

Note:

The replacement of the components must be done in the listed order.

The system must be checked for proper operation after every replacement.

• Circuit interruption between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 17 DTL) (Z 17 DTH) 12 (XC12) (Z 16 XEP) 34 (XC10) (Z 18 XE) 34 (XC4) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 12 (XC53) (Z 13 DTH) 10 (XC20) (Z 18 XER) 39 (XC4) (Z 16 XE1) 34 (XC10) (Z 16 XER) 39 (XC100) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 16 (XC96) (Z 22 YH) 11 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 7 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

If the nominal value is reached during one of the measurements, there is a short to voltage in the circuit behind the component that has been disconnected immediately before that measurement, or the corresponding component is defective.

• Short circuit to voltage between:
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE1)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 7 (XE3)
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEP) (Z 14 XEL) (Z 12 XEP) 5 (XC2) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 5 (XC8) (Z 16 LET) (A 16 LET) 5 (XC98)
  &
  Wiring harness connector terminals of all components (wiring harness side), which were disconnected from the wiring harness during this troubleshooting session

or

• Defective component:
  A84 Control Unit - Engine
  or
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

Note:

The replacement of the components must be done in the listed order.

The system must be checked for proper operation after every replacement.

• Circuit interruption between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 5 (XC2) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 5 (XC8) (Z 16 LET) (A 16 LET) 5 (XC98)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 7 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 1

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• Short circuit to voltage between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 17 DTL) (Z 17 DTH) 22 (XC12) (Z 14 XEP) (Z 14 XEL) (Z 12 XEP) 53 (XC2) (Z 16 XEP) 3 (XC10) (Z 18 XE) 23 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 53 (XC8) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 22 (XC53) (Z 13 DTH) 37 (XC20) (Z 18 XER) 23 (XC4) (Z 16 XE1) 3 (XC10) (Z 16 XER) 23 (XC100) (Z 16 LET) (A 16 LET) 53 (XC98) (Z 17 DTJ) (Z 17 DTR) (A 17 DTJ) (A 17 DTR) 42 (XC96) (Z 22 YH) 35 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 37 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• Circuit interruption between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEL) (Z 14 XEP) (Z 12 XEP) 53 (XC2) (Z 16 XEP) 3 (XC10) (Z 18 XE) 23 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 53 (XC8) (Z 17 DTH) (Z 17 DTL) 22 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 22 (XC53) (Z 13 DTH) 37 (XC20) (Z 18 XER) 23 (XC4) (Z 16 XE1) 3 (XC10) (Z 16 XER) 23 (XC100) (Z 16 LET) (A 16 LET) 53 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 42 (XC96) (Z 22 YH) 35 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 37 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.

• Short circuit to ground between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 17 DTL) (Z 17 DTH) 22 (XC12) (Z 14 XEP) (Z 14 XEL) (Z 12 XEP) 53 (XC2) (Z 16 XEP) 3 (XC10) (Z 18 XE) 23 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 53 (XC8) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 22 (XC53) (Z 13 DTH) 37 (XC20) (Z 18 XER) 23 (XC4) (Z 16 XE1) 3 (XC10) (Z 16 XER) 23 (XC100) (Z 16 LET) (A 16 LET) 53 (XC98) (Z 17 DTR) (Z 17 DTJ) (A 17 DTJ) (A 17 DTR) 42 (XC 96) (Z 22 YH) 35 (XC55)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 10 (XE3)
  or
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 37 (XE1)
  &
  B18 Sensor - Pressure, Air Conditioning
  Wiring harness connector (wiring harness side) terminal 2

or

• Defective component:
  X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.