Schematic Reference: Body Rear End Schematics

Did you perform the Body Rear End Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

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

Does the Fuel Door Unlock relay turn ON and OFF with each command?

Go to Step 6

Go to Step 3

1. Turn OFF the ignition.
2. Disconnect the Fuel Door Unlock Relay.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp between the coil side feed circuit of the Fuel Door Unlock relay and a good ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 12

1. Connect a test lamp between the control circuit of the Fuel Door Unlock relay and the coil side feed circuit of the Fuel Door Unlock relay.
2. With a scan tool, command the Fuel Door Unlock relay ON and OFF .

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

Go to Step 13

Go to Step 5

Does the test lamp remain illuminated with each command?

Go to Step 9

Go to Step 8

1. Disconnect the Fuel Door Lock Solenoid.
2. Connect a test lamp between the input circuit of the Fuel Door Lock solenoid and the ground circuit of the Fuel Door Lock Solenoid.
3. With a scan tool, command the Fuel Door Lock relay ON and OFF.

Does the test lamp illuminate?

Go to Step 15

Go to Step 7

1. Connect a test lamp between the input circuit of the Fuel Door Lock solenoid and a good ground.
2. With a scan tool, command the Fuel Door Lock relay ON and OFF.

Does the test lamp illuminate?

Go to Step 11

Go to Step 10

Test the control circuit of the Fuel Door Unlock 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 14

Test the control circuit of the Fuel Door Unlock 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 14

Test the control circuit of the Fuel Door Lock solenoid for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 15

Test the ground circuit of the Fuel Door Lock solenoid for a high resistance 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 15

Repair the high resistance or open in the coil side feed circuit of Door Unlock relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 19

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Inspect for poor connections at the Fuel Door Unlock 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 harness connector of the Rear Integration Module (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 17

Inspect for poor connections at the Fuel Door 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 18

Replace the Fuel Door Unlock relay.

Did you complete the replacement?

Go to Step 19

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

Did you complete the replacement?

Go to Step 19

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Replace the Fuel Door Lock solenoid.

Did you complete the replacement?

Go to Step 19

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Operate the system for which the symptom occurred.

Did you correct the condition?

System OK

Go to Step 2