Circuit/System Verification

Ignition ON, observe the scan tool Hazard Lamps Switch parameter while applying and releasing the hazard switch. The reading should change between Active and Inactive.
- If the parameter does not change between the commanded states, refer to Circuit/System Testing in Circuit/System Testing .
Observe the right and left turn signal lamps while applying and releasing the hazard lamp switch. The right and left turn signal lamps should flash ON and OFF while the hazard lamp switch is ON and remain OFF when the hazard lamp switch is OFF.
- If the turn signal lamps do not cycle between the selected states, refer to Turn Signal Lamps and/or Indicators Malfunction .
Command the All Indicators Test ON and OFF with a scan tool. The left and right turn signal indicators should turn ON and OFF when changing between the commanded states.
- If the left and right turn signal indicators illuminate during the test, replace the K9 BCM.
- If the left and right turn signal indicators do not illuminate during the test or remain illuminated at all times, replace the P16 instrument panel cluster.