B186F

B186F-ALL DOOR SECONDARY LOCK CONTROL CIRCUIT LOW







- When Monitored:
Continuously.

- Set Condition:
When the (P390) Secondary Door Lock Relay Control circuit does not change from low to high for over 10 seconds, this code will set.





1. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, erase all DTC's.
2. Lower the drivers window.
3. Cycle the ignition from on to off.
4. Close all doors and operate the door locks in lock and unlock position several times. Pause momentarily in between cycles to allow the secondary locks to operate.
5. Turn the ignition on.
6. With the scan tool, read DTC's.

Does the scan tool display this DTC?

Yes

- Go To 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST Body Verification Test.

2. SECONDARY DOOR LOCK RELAY




1. Turn the ignition off.
2. Disconnect the Secondary Door Lock Relay.
3. Turn the ignition on.
4. With the scan tool, read DTC's.

Does the scan tool display this DTC?

Yes

- Go To 3

No

- Replace the Secondary Door Lock Relay.
- Perform the BODY VERIFICATION TEST Body Verification Test.

3. (P390) SECONDARY DOOR LOCK RELAY CONTROL CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the TIPM C7 harness connector.
3. Measure the resistance of the (P390) Secondary Door Lock Relay Control circuit between the Secondary Door Lock Relay connector and the TIPM C7 harness connector.

Is the resistance below 10.0 ohms?

Yes

- Go To 4

No

- Repair the (P390) Secondary Door Lock Relay Control circuit for an open.
- Perform the BODY VERIFICATION TEST Body Verification Test.

4. (P390) SECONDARY DOOR LOCK RELAY CONTROL CIRCUIT SHORT TO GROUND




1. Measure the resistance between ground and the (P390) Secondary Door Lock Relay Control circuit.

Is the resistance above 10k ohms?

Yes

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST Body Verification Test.

No

- Repair the (P390) Secondary Door Lock Relay Control circuit for a short to ground.
- Perform the BODY VERIFICATION TEST Body Verification Test.