12 · Diagnostics

K82 Passenger airbag warning light on

DiagnosisK82 Passenger airbag warning light on

Passenger airbag warning light on

When the key is at MAR and the passenger airbag disable switch is at ON the warning light stays on

Step	Validity	Operation to be performed	Test results
Step	Validity	Operation to be performed	OK	⚠	🔧
1	CHECK WITH DIAGNOSTIC TOOL	Connect diagnostic tool (Examiner or other tools) to the diagnostic socket. Check – no errors in the airbag ECU – plausibility of all parameters	All OK Go to Step 2	Problems found Failed dialogue with the ECU	Intervention Restore connection between airbag ECU and diagnostic socket (Wiring diagram: E7030 “Airbag”)
			All OK Go to Step 2	Error detected in ECU	Continue as shown by the diagnostic tool

2	CHECK DISABLE SWITCH	Check passenger airbag disable switch operation	All OK Go to Step 3		Problems found Switch does not work	Intervention Replace switch PROCEDURE OP. 5580C26
3	CHECK ELECTRIC CIRCUIT	Check: – connection between passenger airbag disable switch and airbag ECU – connection between airbag ECU and instrument panel	All OK Go to Step 4	Problems found Incorrect connections	Intervention Restore connections
4	CHECK CORRECT OPERATION	Check the fault is no longer present	All OK End of test	Problems found Fault persists	Intervention Seek the fault starting from another symptom. Check and if required, replace airbag ECU PROCEDURE OP. 5580C14

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.