Schematic Reference: Door Lock Cylinder Replacement and Release Systems Schematics

Connector End View Reference: Vehicle Access Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the driver door handle parameter in the driver door module (DDM) data list.
4. Activate the driver exterior door handle.

Does the scan tool display Inactive?

Go to Step 7

Go to Step 3

1. With a scan tool, observe the ext. driver door handle switch parameter in the remote control door lock receiver (RCDLR) miscellaneous inputs list.
2. Activate the driver exterior door handle.

Does the scan tool display Inactive?

Go to Step 8

Go to Step 4

1. Turn OFF the ignition.
2. Disconnect the DDM C1 harness connector.
3. Connect a test lamp between the door handle switch signal circuit of the unlatch enable switch and battery voltage at the DDM C1 harness connector.

Does the test lamp illuminate?

Go to Step 11

Go to Step 5

Activate the driver exterior door handle and observe the test lamp.

Does the test lamp illuminate as the driver exterior door handle is activated?

Go to Step 6

Go to Step 12

1. Reconnect the DDM C1 harness connector.
2. Disconnect the driver door latch assembly harness connector.
3. Connect a test lamp between the door latch motor control circuit and the door unlatch motor control circuit at the driver door latch assembly harness connector.
4. Turn ON the ignition, with the engine OFF.
5. Activate the driver exterior door handle.

Does the test lamp illuminate as the door handle is activated?

Go to Step 14

Go to Step 9

Test the left front door handle lift switch signal circuit of the DDM for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 13

Test the left front door handle lift switch signal circuit of the RCDLR for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 15

Test the door latch motor control circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 10

Test the door unlatch motor control circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 16

Test the door handle switch signal circuit of the unlatch enable switch for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 17

Test the door handle switch signal circuit of the unlatch enable switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 13

Test the driver door handle switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 17

Inspect for poor connections at the harness connector of the driver door latch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 18

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

Did you find and correct the condition?

Go to Step 22

Go to Step 19

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

Did you find and correct the condition?

Go to Step 22

Go to Step 20

Inspect for poor connections at the harness connector of the driver exterior door handle switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 21

Replace the driver door latch assembly. Refer to Front Side Door Lock Replacement .

Did you complete the replacement?

Go to Step 22

--

Replace the RCDLR. Refer to Control Module References for replacement, setup and programming.

Did you complete the replacement?

Go to Step 22

--

Replace the DDM. Refer to Control Module References for replacement, setup and programming.

Did you complete the replacement?

Go to Step 22

--

Replace the driver exterior door handle switch. Refer to Front Side Door Outside Handle Replacement .

Did you complete the replacement?

Go to Step 22

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2