Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1462 00

Ignition OFF, disconnect the headlamp control module harness connector.
Ignition ON, verify that a test lamp does not illuminate between ground and each RH AFS motor control circuit one at a time.
- If the test lamp illuminates, repair the effected RH AFS motor control circuit for a short to voltage.
Ignition OFF, test each RH AFS motor control circuit for good continuity.
- If good continuity is not detected, repair the affected RH AFS motor control circuit for shorts to each other or an open/high resistance. If the circuits test normal, test or replace the RH AFS motor.
If all circuits test normal, replace the headlamp control module.

DTC B1462 02

Ignition OFF, disconnect the headlamp control module harness connector.
Verify that a test lamp does not illuminate between battery positive voltage and each RH AFS motor control circuit one at a time.
- If the test lamp illuminates, repair the effected RH AFS motor control circuit for a short to ground. If the circuits test normal, test or replace the RH AFS motor.
If all circuits test normal, replace the headlamp control module.

DTC B1462 39

Ignition ON, install a scan tool and clear all DTCs.
Operate the vehicle within the conditions for running the DTC.
With the scan tool, retrieve DTCs and determine if DTC B1461 39 has reset as current.
- If DTC B1461 39 resets as a current DTC, replace the headlamp control module.

DTC B1462 54

Ignition ON, install a scan tool and clear all DTCs.
Operate the vehicle within the conditions for running the DTC.
With the scan tool, retrieve DTCs and determine if DTC B1461 54 has reset as current.
- If DTC B1461 54 resets as a current DTC, replace the headlamp control module.