Vauxhall Workshop Service and Repair Manuals

C-01, No communication between diagnostic tester and control unit  

C-01, No communication between diagnostic tester and control unit
Test	Work order description		Nominal value
T01	Check: Supply voltage of the components
	•  Ignition OFF   •  Measure voltage between following terminals:		11.5...13.5 V
	X13 Diagnostic plug 16P     Terminal 16 in base     &     Ground
	Yes:   T02	No:   E01
T02	Check: Ground connection of the components
	•  Measure voltage between following terminals:		11.5...13.5 V
	X13 Diagnostic plug 16P     Terminal 16 on base     &     X13 Diagnostic plug 16P     Terminals 4 and 5 on base
	Yes:   T03	No:   E02
T03	Check: Supply voltage of the control unit
	•  Ignition OFF   •  Disconnect wiring harness plug from:		11.5...13.5 V
	K50 ABS control unit
	•  Ignition ON   •  Measure voltage between following terminals:
	K50 ABS control unit     Wiring harness plug terminal 15     &     Ground
	Yes:   T04	No:   E03
T04	Check: Ground connection of the control unit
	•  Ignition ON   •  Measure voltage between following terminals:		11.5...13.5 V
	K50 ABS control unit     Wiring harness plug terminal 15     &     K50 ABS control unit     Wiring harness plug terminal 19
	Yes:   T05	No:   E04
T05	Check: Circuit interruption of the signal circuit
	•  Ignition OFF   •  Disconnect wiring harness plug from:		less than 1 Ω
	K31 Airbag control unit
	•  Measure resistance between following terminals:
	K50 ABS control unit     Wiring harness plug terminal 11     &     X13 Diagnosis 16P     Terminal 12 of base
	Yes:   T06	No:   E05
T06	Check: Short circuit of the signal circuit
	•  Ignition ON   •  Measure voltage between following terminals:		less than 0.1 V
	X13 Diagnosis 16P     Terminal 12 of base     &     Ground
	Yes:   T07	No:   E06
T07	Check: Result of the signal circuit
	•  Ignition OFF   •  Measure resistance between following terminals:		greater than 100 k Ω
	X13 Diagnosis 16P     Terminal 12 of base     &     Ground
	Yes:   T08	No:   E07
T08	Check: Tester
	•  Select using TECH1:		OK
	SELFTEST REQUEST
	Yes:   E09	No:   E08

C-01, No communication between diagnostic tester and control unit
No.	Result
E01	•  Short circuit to ground/ circuit interruption between:
	X13 Diagnosis 16P     Terminal 16 on base     &     Fuse F1
E02	•  Circuit interruption/ short circuit to voltage between:
	X13 Diagnosis 16P     Terminal 4 and 5 of base     &     Battery G1     Terminal 31
E03	•  Short circuit to ground/ circuit interruption between:
	K50 ABS control unit     Wiring harness plug terminal 15     &     Terminal 15 or 30 (Battery)
E04	•  Circuit interruption between:
	K50 ABS control unit     Wiring harness plug terminal 19     &     Battery G1     Terminal 31
E05	•  Circuit interruption between:
	K50 ABS control unit     Wiring harness plug terminal 11     &     X13 Diagnosis 16P     Terminal 12 of base   or
	•  Defective components:
	Instrument panel X6 & front body 45P     Wiring harness plug terminal 65
E06	•  Short circuit to voltage between:
	X13 Diagnosis 16P     Terminal 12 of base     &     Battery G1     Terminal 15
E07	•  Short circuit to ground between:
	X13 Diagnosis 16P     Terminal 12 of base     &     Battery G1     Terminal 31
E08	•  Defective components:
	Adapter cable from TECH1     TECH1     K50 ABS control unit
E09	•  Reference to other system:
	K61 Airbag control unit