Diagnostic Test
- CHECK FOR AN ACTIVE DTC
- With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
- Record the Environmental Data and any DTCs.
- With the scan tool, erase DTCs.
- Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
- With the scan tool, read BCM DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer TESTING FOR AN INTERMITTENT CONDITION to STANDARD PROCEDURE .
- CHECK THE (K807) FRONT PARK ASSIST SWITCH DISABLE/ENABLE CIRCUIT FOR A SHORT TO VOLTAGE
- Turn the ignition off.
- Disconnect the Headlamp Switch harness connector.
- Turn the ignition on.
- Measure the voltage on the (K807) Front Park Assist Switch Disable/Enable circuit at the Headlamp Switch harness connector.
Is there any voltage present?
Yes
- Repair the short to voltage on the (K807) Front Park Assist Switch Disable/Enable circuit.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 3
- CHECK THE (K805) STOP/START SWITCH ILLUMINATION CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
- Measure the voltage on the (K805) Stop/Start Switch Illumination Control circuit at the Headlamp Switch harness connector.
Is there any voltage present?
Yes
- Repair the short to voltage on the (K805) Stop/Start Switch Illumination Control circuit.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 4
- Measure the voltage on the (K805) Stop/Start Switch Illumination Control circuit at the Headlamp Switch harness connector.
- CHECK THE BCM FOR PROPER OPERATION
- Turn the ignition off.
- Connect a fused jumper wire between ground and the (K807) Front Park Assist Switch Disable/Enable circuit at the Headlamp Switch harness connector.
- Connect a fused jumper wire between ground and the (K805) Stop/Start Switch Illumination Control circuit at the Headlamp Switch harness connector.
- Turn the ignition on.
- With the scan tool, read BCM DTCs.
Does DTC: B1084-11-STOP AND START ENABLE/PARKING SENSOR DISABLE BUTTONS-CIRCUIT SHORT TO GROUND set as active?
Yes
- Replace the Headlamp Switch in accordance with the Service Information. Refer to SWITCH, HEADLAMP, REMOVAL AND INSTALLATION .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 5
- CHECK THE (K807) FRONT PARK ASSIST SWITCH DISABLE/ENABLE CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
- Turn the ignition off.
- Disconnect the BCM C4/D harness connector.
- Measure the resistance on the (K807) Front Park Assist Switch Disable/Enable circuit between the Headlamp Switch harness connector and BCM C4/D harness connector - terminal 37.
Is the resistance above 3.0?
Yes
- Repair the open or high resistance on the (K807) Front Park Assist Switch Disable/Enable circuit.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 6
- CHECK THE (K805) STOP/START SWITCH ILLUMINATION CONTROL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
- Measure the resistance on the (K805) Stop/Start Switch Illumination Control circuit between the Headlamp Switch harness connector and BCM C4/D harness connector - terminal 17.
Is the resistance above 3.0?
Yes
- Repair the open or high resistance on the (K805) Stop/Start Switch Illumination Control circuit.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 7
- Measure the resistance on the (K805) Stop/Start Switch Illumination Control circuit between the Headlamp Switch harness connector and BCM C4/D harness connector - terminal 17.
- CHECK RELATED HARNESS CONNECTIONS
- Disconnect all BCM harness connectors.
- Disconnect all related in-line harness connections (if equipped).
- Disconnect the related component harness connectors.
- Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
- Proper connector installation.
- Damaged connector locks.
- Corrosion.
- Other signs of water intrusion.
- Weather seal damage (if equipped).
- Bent terminals.
- Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
- Terminals that have been pushed back into the connector cavity.
- Perform a terminal drag test on each connector terminal to verify proper terminal tension.
Repair any conditions that are found.
- Connect all BCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
- Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
- Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
- With the scan tool, erase DTCs.
- Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
- With the scan tool, read BCM DTCs.
Did the DTC return?
Yes
- Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL AND INSTALLATION .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
- Test complete.