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TABLE 2, TROUBLE CODES - Trouble Code 42 AUTOMATIC TRANS. INFO. CIRCUIT > < Explanation of Tables

Omega B

Table 1, Diagnostic Plug XD and Voltage Supply, Check

 

TECH 1 refers to table 1 if the unit is correctly connected, but data cannot be received from the control unit. In this case, perform the following tests:

 

 

·   Carry out TECH 1 self-test as described in the TECH 1 Operating Instructions.

 

 

Important: For this test, TECH 1 must be connected to the battery with the battery connection lead.

 

 

·   Check DLC adapter being used as described in the TECH 1 Operating Instructions.

 

 

If data still cannot be received after the self-test, check the

 

 

·   Diagnostic plug XD

·   Voltage supply for MID

·   Ground connection for MID

 

 

according to table 1.

 

 

Table 1, Diagnostic Plug XD and Voltage Supply, Check

 

Test

Test

Check

Notes

Nominal

Possible Cause of Fault,

Step

Equipment Multimeter

MKM-587-A

 

of

between

 

Values

Trouble-shooting

1

Ohmmeter

Diagnostic plug XD: ground

Ter. 4 and 5/ ground

Ignition OFF

lower

than 2 W

·   Transition resistance at grounding point too high

 

 

 

 

 

 

 

·   Lead interruption between XD/Ter. 4 or Ter. 5 and ground

 

2

Voltmeter

Diagnostic plug XD:

Ter. 16

Ignition OFF

higher

·   Battery voltage too low

 

 

voltage supply

Ter. 30

ground

 

than

11,5 V

 

 

 

 

 

 

 

·   Lead interruption between XD/Ter. 16 and voltage supply Ter. 30

 

 

 

 

 

 

 

·   Discharge battery

 

 

 

 

 

 

 

3

Ohmmeter

Diagnostic plug XD / MID wiring harness plug, 26-pin: bidirectional serial data line K

XD/Ter. 8 Plug, 26-pin Ter. 14

Ignition OFF

lower

than 2 W

·   Lead interruption between XD/ Ter. 8 and MID wiring harness plug,

     26-pin/ Ter. 14

 

 

 

 

 

 

 

·   MID defective

 

4

Voltmeter

MID wiring harness plug, 26-pin:

Ter. 1/ ground

Ignition OFF, release 26-pin

higher than

·   Battery voltage too low

 

 

voltage supply

Ter. 30

 

plug and disconnect from MID

11,5 V

·   Lead interruption between Ter. 30 and MID wiring harness plug, 26-pin/Ter. 1

 

 

 

 

 

 

 

·   MID defective

 

5

Voltmeter

MID wiring harness plug, 26-pin:

Ter. 5/ ground

Ignition OFF, release 26-pin

higher than

·   Battery voltage too low

 

 

voltage supply Ter. 15 (ignition)

 

plug and disconnect from MID, ignition ON

11,5 V

·   Lead interruption between Ter. 15 and MID wiring harness plug, 26-pin/Ter. 5

 

 

 

 

 

 

 

·   MID defective

 

6

Ohmmeter

MID wiring harness plug, 12-pin and 26-pin: ground

Plug, 12-pin/

Ter. 4 to ground; plug, 26-pin/

Ignition OFF, release 12-pin and 26-pin plug and disconnect from MID.

lower

than 2 W

·   Transition resistance between MID wiring harness plug, 12-pin/ Ter. 4 or 26-pin/ Ter. 2 and ground too high

 

 

 

 

Ter. 2 to ground

 

 

·   Line interruption between MID wiring harness plug, 12-pin/Ter. 4 or 26-pin/Ter. 2 and ground

 

 

 

 

 

 

 

 

 

 

TABLE 2, TROUBLE CODES - Trouble Code 42 AUTOMATIC TRANS. INFO. CIRCUIT > < Explanation of Tables