Schematic Reference: Body Rear End Schematics

1

Did you perform the Diagnostic System Check For Body Rear End?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

Press the fuel door release button on the drivers door.

Did you perform the Diagnostic System Check for Body Rear End?

Does the fuel door open?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF, car in PARK.
3. With a scan tool, view the Fuel Door Release Switch input parameter in the DDM data list.
4. Operate the fuel door release switch.

Does the parameter change state?

Go to Step 6

Go to Step 4

1. Disconnect the fuel door/trunk release switch.
2. With a scan tool, view the Fuel Door Release Switch input parameter in the DDM data list.
3. Connect a 3-amp fused jumper between the fuel door switch signal circuit and a good ground.

Does the parameter change state?

Go to Step 5

Go to Step 16

1. With a scan tool, view the Fuel Door Release Switch input parameter in the DDM data list.
2. Connect a 3-amp fused jumper between the fuel door switch signal circuit and the fuel door trunk release switch ground circuit.

Does the parameter change state?

Go to Step 18

Go to Step 15

1. Verify that the valet switch is in the CLOSED position.
2. With a scan tool, command the Fuel Door Release Relay ON and OFF.

Did you hear the fuel door release relay click?

Go to Step 7

Go to Step 9

1. Disconnect the fuel door release solenoid.
2. Connect a test lamp between the fuel door release solenoid control voltage circuit of the fuel door release solenoid and a good ground.
3. Command the Fuel Door Release Relay ON.

Does the test lamp turn ON for 1 second?

Go to Step 8

Go to Step 17

1. Connect a test lamp between the fuel door release solenoid control voltage circuit of the fuel door release solenoid and the fuel door release solenoid ground circuit of the fuel door release solenoid.
2. Command the Fuel Door Release Relay ON.

Does the test lamp turn ON for 1 second?

Go to Step 22

Go to Step 27

1. Turn OFF the ignition.
2. Disconnect the fuel door release relay.
3. Turn ON the ignition, with the engine OFF.
4. Probe the valet switch control circuit of the fuel door release relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 10

Go to Step 12

1. Connect a test lamp between the valet switch control circuit of the fuel door release relay and the control circuit of the fuel door release relay.
2. With a scan tool, command the Fuel Door Release Relay ON and OFF .

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

Go to Step 11

Go to Step 14

Does the test lamp remain illuminated with each command?

Go to Step 24

Go to Step 21

1. Disconnect the valet switch
2. Connect a test lamp between the input circuit of the valet switch and a good ground.

Does the test lamp illuminate?

Go to Step 13

Go to Step 26

1. Connect a 3-amp fused jumper between the battery positive circuit of the valet switch and the valet switch control circuit of the valet switch.
2. Probe the valet switch control circuit of the fuel door release relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 20

Go to Step 25

Test the valet switch control circuit of the fuel door release relay for 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 34

Go to Step 23

Test the ground circuit of the fuel door/trunk release switch for 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 34

Go to Step 19

Test the fuel door release signal circuit of the fuel door/trunk release switch for 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 34

Go to Step 19

Test the fuel door release solenoid control voltage circuit of the fuel door release solenoid for 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 34

Go to Step 21

Inspect for poor connections at the harness connector of the fuel door/trunk release switch. 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 34

Go to Step 28

Inspect for poor connections at the harness connector of the Drivers Door Switch. 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 34

Go to Step 29

Inspect for poor connections at the harness connector of the valet switch. 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 34

Go to Step 30

Inspect for poor connections at the fuel door release 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 34

Go to Step 31

Inspect for poor connections at the harness connector of the fuel door release 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 34

Go to Step 32

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 34

Go to Step 33

Repair the short to ground in the control circuit of the fuel door release relay . Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

Repair the high resistance or open in the valet switch control circuit of the fuel door release relay. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

Repair the high resistance or open in the battery positive voltage circuit of the valet switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

Repair the high resistance or open in the ground circuit of the fuel door release solenoid. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

Replace the fuel door/trunk release switch.

Did you complete the replacement?

Go to Step 34

--

Replace the drivers door switch. Refer to Front Door Switch Replacement in Doors.

Did you complete the replacement?

Go to Step 34

--

Replace the valet switch. Refer to Rear Compartment Lid Valet Lock Out Switch Replacement in Instrument Panel, Gages and Console.

Did you complete the replacement?

Go to Step 34

--

Replace the fuel door release relay.

Did you complete the replacement?

Go to Step 34

--

Replace the fuel door release solenoid.

Did you complete the replacement?

Go to Step 34

--

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

Did you complete the replacement?

Go to Step 34

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3