Spark

Power Door Locks Malfunction

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.

1. Command the door lock actuators to LOCK and UNLOCK by pressing the Lock and Unlock buttons on the remote keyless entry transmitter. The door lock actuators and tailgate lock actuator should LOCK and UNLOCK while changing between the commanded states.

⇒	If one or more door lock actuators do not UNLOCK, refer to Door Unlock Relay Malfunction.

⇒	If one or more door lock actuators do not LOCK, refer to Door Lock Relay Malfunction.

2. Command the door lock actuators to LOCK and UNLOCK by using the driver door lock switch. The door lock actuators should LOCK and UNLOCK while changing between the commanded states.

⇒	If the driver door lock switch does not command the LOCK or UNLOCK functions, refer to Door Lock Switch Malfunction.

Door Unlock Relay Malfunction

1. Ignition OFF, disconnect the DOOR UNLOCK relay.
2. Test for less than 1Ω between the ground circuit terminal 87A 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 does not illuminate between the control circuit terminal 30 and ground.

⇒	If the test lamp illuminates, test the control circuit for a short to voltage.

4. 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.

5. Verify that a test lamp illuminates between the B+ circuit terminal 87 and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

6. Connect a test lamp between the control circuit terminal 85 and the B+ circuit terminal 86.
7. Ignition ON, command the doors to UNLOCK by using the remote keyless entry transmitter. The test lamp should briefly illuminate during the UNLOCK command.

⇒	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 I/P fuse block.

⇒	If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the I/P fuse block.

8. Ignition OFF, connect the DOOR UNLOCK relay and disconnect the wiring harness plug at the appropriate door lock actuator.
9. Test for less than 5 Ω between the control circuit terminal B and ground.

⇒	If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the DOOR UNLOCK relay.

10. Ignition OFF, connect a test lamp between the control circuit terminal A and ground.
11. Ignition ON, command the doors to UNLOCK by using the remote keyless entry transmitter. The test lamp should briefly illuminate when commanding the UNLOCK state.

⇒	If the test lamp is always OFF, test the control circuit for a short to ground. If the circuit tests normal, test or replace the DOOR UNLOCK relay.

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

Door Lock Relay Malfunction

1. Ignition OFF, disconnect the DOOR LOCK relay.
2. Test for less than 1Ω between the ground circuit terminal 87A 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 does not illuminate between the control circuit terminal 30 and ground.

⇒	If the test lamp illuminates, test the control circuit for a short to voltage.

4. 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.

5. Connect a test lamp between the control circuit terminal 85 and the B+ circuit terminal 86.
6. Command the doors to LOCK by using the remote keyless entry transmitter. The test lamp should briefly illuminate when commanding the LOCK state.

⇒	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 I/P fuse block.

⇒	If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the I/P fuse block.

7. Ignition OFF, connect the DOOR LOCK relay and disconnect the wiring harness plug at the appropriate door lock actuator.
8. Test for less than 5 Ω between the control circuit terminal A and ground.

⇒	If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the DOOR LOCK relay.

9. Ignition ON, connect a test lamp between the control circuit terminal B and ground of the door lock actuator.
10. Command the doors to LOCK by using the remote keyless entry transmitter. The test lamp should briefly illuminate when commanding the LOCK state.

⇒	If the test lamp is always OFF, test the control circuit for a short to ground. If the circuit tests normal, test or replace the DOOR LOCK relay.

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

Door Lock Switch Malfunction

1. Ignition OFF, disconnect the wiring harness plug at the driver door lock switch.
2. Test for less than 1Ω between the ground circuit terminal listed below and ground:

•	LHD terminal B

•	RHD terminal C

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

3. Ignition ON, test for greater than 9 V between the signal circuit terminal listed below and ground:

•	RHD terminal D

•	RHD terminal B

•	LHD terminal A

•	LHD terminal C

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the I/P fuse block.

4. Install a 3A fused jumper wire between the signal circuit terminal listed below and ground. Verify the doors perform the UNLOCK function.

•	RHD terminal D

•	LHD terminal A

⇒	If the doors do not perform the specified function, test the signal circuit for a short circuit to voltage. If the circuit tests normal, replace the I/P fuse block.

5. Install a 3A fused jumper wire between the signal circuit terminal listed below and ground. Verify the doors perform the LOCK function.

•	RHD terminal B

•	LHD terminal C

⇒	If the doors do not perform the specified function, test the signal circuit for a short circuit to voltage. If the circuit tests normal, replace the I/P fuse block.

6. If all circuits test normal, test or replace the driver door lock switch.

Door Lock Switch

1. Ignition OFF, disconnect the wiring harness plug at the driver door lock switch.
2. Test for infinite resistance between the terminals listed below with the switch in the open position:

•	RHD signal terminal D and ground terminal C

•	RHD signal terminal B and ground terminal C

•	LHD signal terminal A and ground terminal B

•	LHD signal terminal C and ground terminal B

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

3. Test for less than 2Ω between the terminals listed below with the switch in the Lock position:

•	RHD signal terminal B and ground terminal C

•	LHD signal terminal C and ground terminal B

⇒	If greater or less than the specified range, replace the driver door lock switch.

4. Test for less than 2Ω between the terminals listed below with the switch in the Unlock position:

•	RHD signal terminal D and ground terminal C

•	LHD signal terminal A and ground terminal B

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

Door Catch

1. Ignition OFF, disconnect the wiring harness plug at the appropriate door lock actuator.
2. Install a 15A 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 2 times. The door lock actuator should perform the LOCK/UNLOCK functions.

⇒	If it does not perform as specified, replace the 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 3A 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 diagnostic procedure.