Captiva

Power Door Locks Malfunction - Opel-Chevrolet

The power door lock actuators are controlled through the door lock and unlock relays in the IP fuse block. While the relays are in the de-energised state, the actuator control circuits are grounded through the relays. When lock or unlock function is activated, the appropriate relay is energised and the control circuit is switched to battery voltage. The door lock relays are wired in parallel to the lock and unlock control circuits. Lock and unlock functions are determined by which control circuit is switched to battery voltage while the other remains grounded.

Schematic Reference

Door Lock/Indicator Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Power Door Locks Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Rear Doors Lock Cmd and Rear Doors Unlock Cmd while toggling the driver door lock switch between the LOCK and UNLOCK. Each reading should change between On and Off.

⇒	If either parameter does not change, refer to Driver Door Lock Switch Malfunction.

2. Observe the function of the door latches while commanding the doors to LOCK and UNLOCK by toggling the driver door lock switch between the LOCK and UNLOCK. All doors should perform the LOCK and UNLOCK functions while changing between the commanded states.

⇒	If one or more but not all doors are inoperative, refer to Single Door Latch Inoperative.

⇒	If all doors latches are inoperative, refer to All Doors Lock and Unlock Inoperative.

⇒	If all doors UNLOCK but do not LOCK, refer to All Doors Unlock But Do Not Lock.

⇒	If all doors LOCK but do not UNLOCK, refer to All Doors Lock But Do Not Unlock.

Driver Door Lock Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S13D door lock switch-driver.
2. Test for less than 5 Ω between the ground circuit terminal 3 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Test for greater than 10 V between the signal circuit terminal 2 and ground.

⇒	If less than the specified range, test the signal circuit for a short of ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM

4. Test for greater than 10 V between the signal circuit terminal 4 and ground.

⇒	If less than the specified range, test the signal circuit for a short of ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM

5. If all circuits test normal, test or replace the S13D door lock switch-driver.

Single Door Latch Malfunction.

1. Ignition OFF, disconnect the harness connector at the appropriate M14 door lock actuator.
2. Connect a test lamp between the control circuit terminals listed below:

•	M14D door lock actuator - driver control terminal 2 and control terminal 3 (Left Hand Drive)

•	M14D door lock actuator - driver control terminal 8 and control terminal 7 (Right Hand Drive)

•	M14P door lock actuator - passenger control terminal 8 and control terminal 7 (Left Hand Drive)

•	M14P door lock actuator - passenger control terminal 2 and control terminal 3 (Right Hand Drive)

•	M14LR door lock actuator - left rear terminal 2 and terminal 3

•	M14RR door lock actuator - right rear terminal 7 and terminal 8

3. Ignition ON, command the door to LOCK and UNLOCK by using the central door lock switch. The test lamp should briefly illuminate when commanding the LOCK and UNLOCK states.

⇒	If the test lamp is always OFF for either the LOCK or UNLOCK command, test the control circuit for an open/high resistance between the connector and the circuit splice.

4. If all circuits test normal, test or replace the M14 door lock actuator.

All Doors Lock and Unlock Inoperative

1. Ignition OFF, disconnect the X2 harness connector at the X51A fuse block-instrument panel.
2. Test for less than 10 Ω between the ground circuit terminal 52 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the F45DA fuse test point and ground.

⇒	If the test lamp does not illuminate and the B+ circuit fuse is good, test the B+ circuit for an open/high resistance.

⇒	If the test lamp does not illuminate and the B+ circuit fuse is open, test the B+ circuit and the door latch control circuits for a short to ground.

4. If all circuits test normal, refer to Single Door Latch Malfunction.

All Doors Unlock But Do Not Lock

1. Ignition OFF, disconnect the KR97 door lock relay.
2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 85 and ground.

⇒	If the test lamp illuminates, test the control circuit for a short to B+. If the circuit tests normal, replace the K9 BCM.

3. Connect a test lamp between the control circuit terminal 85 and ground.
4. Ignition ON, command the Lock Rear Doors with a scan tool. The test lamp should turn ON when commanding the LOCK state.

⇒	If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

5. If all circuits test normal, test or replace the KR97 door lock relay.

All Doors Lock But Do Not Unlock

1. Ignition OFF, disconnect the KR90 door unlock relay.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 86 and ground.

⇒

If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the control circuit terminal 30 for a short to ground. If the circuit tests normal, test or replace the KR90 door unlock relay.

3. Connect a test lamp between the control circuit terminal 85 and the B+ circuit terminal 86.
4. Command the doors to UNLOCK by toggling the driver door lock switch to the UNLOCK position. The test lamp should briefly illuminate when commanding the UNLOCK state.

⇒	If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.

⇒	If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

5. If the circuit tests normal, test or replace the KR90 door unlock relay.

Door Lock Switch

1. Ignition OFF, disconnect the harness connector at the S13D door lock switch-driver.
2. Test for infinite resistance between the signal terminal 2 and the ground terminal 3 with the switch in the open position.

⇒	If not the specified value, replace the S13D door lock switch-driver.

3. Test for infinite resistance between the signal terminal 4 and the ground terminal 3 with the switch in the open position.

⇒	If not the specified value, replace the S13D door lock switch-driver.

4. Test for less than 5 Ω between the signal terminal 4 and the ground terminal 3 with the switch in the LOCK position.

⇒	If greater than the specified range, replace the S13D door lock switch-driver.

5. Test for less than 5 Ω between the signal terminal 2 and the ground terminal 3 with the switch in the UNLOCK position.

⇒	If greater than the specified range, replace the S13D door lock switch-driver.

Door Catch

1. Ignition OFF, disconnect the harness connector at the appropriate M14 door lock actuator.
2. Install a 15 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the M14 door lock actuator should perform the LOCK and UNLOCK functions.

⇒	If it does not perform as specified, replace the M14 door lock actuator.

Relay Test

1. Ignition OFF, disconnect the appropriate relay.
2. Test for 60-200 Ω between terminals 85 and 86.

⇒	If not within the specified range, replace the relay.

3. Test for infinite resistance between the following terminals:

•

30 and 86

•

30 and 87

•

30 and 85

•

85 and 87

⇒	If less than the specified value, replace the relay.

4. Test for less than 2 Ω between terminals 30 and 87A.

⇒	If greater than the specified range, replace the relay.

5. Install a 3 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 Ω between terminals 30 and 87.

⇒	If greater than specified range, replace the relay.

Perform the Diagnostic Repair Verification after completing the repair.