Hood Ajar Circuit Open
Possible Causes:
- Hood Ajar Switch Ground Circuit Open
- Intermittent Condition
- Hood Ajar Switch
- Hood Ajar Switch Sense Circuit Open
- Body Control Module Internal Malfunction
Testing
- Open the Hood. With the DRBIII(R) in Inputs/Outputs, read the HOOD AJAR SW state. Does the DRBIII(R) display CLOSED? If yes, the condition that caused this symptom is currently not present. Inspect the related wiring harness for a possible intermittent condition. Look for any chafed, pierced, pinched or partially broken wires. If no, go to next step.
- Disconnect the Hood Ajar switch connector. Using a 12-volt Test Light connected to 12-volts, test the Ground circuit for continuity. Does the light illuminate? If yes, go to next step. If no, repair the Ground circuit for an open. Perform BODY VERIFICATION TEST .
- Disconnect the Hood Ajar Switch connector. With the DRBIII(R) in Inputs/Outputs, read the HOOD AJAR SW state. Connect a jumper wire between Sense circuit and the Ground circuit. Does the DRBIII(R) display HOOD AJAR SW: CLOSED? If yes, replace the Hood Ajar Switch. Perform BODY VERIFICATION TEST . If no, go to next step.
- Disconnect the Body Control Module C1 harness connector. Disconnect the Hood Ajar Switch harness connector. Measure the resistance of the Sense circuit. Is the resistance below 5.0 ohms? If yes, replace the Body Control Module. Perform BODY VERIFICATION TEST . If no, repair the Hood Ajar Switch Sense circuit for an open. Perform BODY VERIFICATION TEST .