Schematic Reference: Column/Ignition Lock Schematics

1

Did you perform the Steering Wheel and Column Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Steering Wheel and Column

2

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, command the lock cylinder relay ON and OFF.

Does the lock cylinder relay turn ON and OFF with each command?

Go to Step 6

Go to Step 3

3

1. Turn OFF the ignition.
2. Disconnect the lock cylinder relay.
3. Turn ON the ignition, with the engine OFF.
4. Probe the battery positive voltage circuit of the lock cylinder relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 14

4

1. Connect a test lamp between the control circuit of the lock cylinder relay and the battery positive voltage circuit of the lock cylinder relay.
2. With a scan tool, command the lock cylinder relay ON and OFF.

Does the test lamp turn ON and OFF with each command?

Go to Step 11

Go to Step 5

5

Does the test lamp remain illuminated with each command?

Go to Step 9

Go to Step 8

1. Disconnect the park lock solenoid.
2. Connect a test lamp between the battery positive voltage and ground circuits of the park lock solenoid.
3. With a scan tool, command the lock cylinder relay ON and OFF.

Does the test lamp turn ON and OFF with each command?

Go to Step 12

Go to Step 7

Connect a test lamp between the park lock solenoid ground circuit and battery positive voltage.

Does the test lamp illuminate?

Go to Step 10

Go to Step 15

Test the control circuit of the lock cylinder relay for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 13

Test the control circuit of the lock cylinder relay for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 13

Test the of the battery positive voltage circuit of the park lock solenoid for an open, a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 11

Inspect for poor connections at the lock cylinder relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 16

Inspect for poor connections at the park lock solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 17

Inspect for poor connections at the harness connector of the RIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 19

Go to Step 18

Repair the battery positive voltage circuit of the lock cylinder relay. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 19

--

Repair the ground circuit of the park lock solenoid. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 19

--

Replace the lock cylinder relay.

Did you complete the replacement?

Go to Step 19

--

Replace the park lock solenoid. Refer to Electric Park Lock Module - Disassemble - Off Vehicle .

Did you complete the replacement?

Go to Step 19

--

Important: Perform the set up procedure for the RIM .

Replace the RIM. Refer to Rear Integration Body Control Module Replacement .

Did you complete the replacement?

Go to Step 19

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2