Fault code 19: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING (FAULT CODE 19)

Work instruction			Display OK	If not OK
1	Check wiring from signal converter to control module for short circuit to ground	Switch off ignition Pull plug A off the control module Pull plug off the signal converter Measure resistance between plug A on control module pin 4 and ground Measure resistance between plug A on control module pin 3 and ground	Step 2	Repair wiring harness -> End
2	Check wiring from signal converter to control module for short circuit to B+	Switch off ignition Pull plug A off the control module Pull plug off the signal converter Switch on ignition Measure voltage between plug A on control module pin 4 and ground Measure voltage between plug A on control module pin 3 and ground	0 V Step 3	Repair wiring harness -> End
3	Check wiring from signal converter to the control module for open circuit	Measure resistance between plug A on control module pin 4 and plug on signal converter pin 4 Measure resistance between plug A on control module pin 3 and plug on signal converter pin 6	< 5 Step 4	Repair wiring harness -> End
4	Replace signal converter		-> End