Test Description
The numbers below refer to the step numbers on the diagnostic table.
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Listen for an audible click when the reverse relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
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This step tests for voltage at the control side of the reverse relay.
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This step verifies that the control module is providing ground to the reverse relay.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Did the backup lamps operate properly? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
Does the reverse lamp relay turn ON and OFF with each command? | Go to Step 6 | Go to Step 4 | |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 14 | |
Does the test lamp turn ON and OFF with each command? | Go to Step 12 | Go to Step 9 | |
6 | Probe the reverse relay switch side supply voltage circuit with a test lamp that is connected to a good ground. Does the test lamp illuminate? | Go to Step 7 | Go to Step 15 |
7 | Connect a 10-amp fused jumper between the reverse relay switch side supply voltage circuit and the backup lamp supply voltage circuit. Do both of the backup lamps illuminate? | Go to Step 12 | Go to Step 8 |
8 |
Does the test lamp illuminate? | Go to Step 11 | Go to Step 10 |
9 | Test the reverse lamp relay control circuit for an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 13 |
10 | Test the backup lamp supply voltage circuit 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 20 | Go to Step 16 |
11 | Inspect for poor connections at the backup lamp bulb. 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 20 | Go to Step 18 |
12 | Inspect for poor connections at the reverse 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 20 | Go to Step 17 |
13 | 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 20 | Go to Step 19 |
14 | Repair the open circuit in the reverse relay control side supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | -- |
15 | Repair the open circuit in the reverse relay switch side supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | -- |
16 | Repair the open circuit in the backup lamp ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | -- |
17 | Replace the reverse relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 20 | -- |
18 | Replace the backup lamp bulb. Did you complete the replacement? | Go to Step 20 | -- |
19 | Replace the RIM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 20 | -- |
20 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
