The rear integration module (RIM) monitors the voltage input of the hood open switch signal circuit and the hood closed switch signal circuit. With the hood open, the hood open portion of the switch is closed, grounding the hood open switch signal circuit from the RIM, and the hood closed portion of the switch is open. With the hood closed, the hood closed portion of the switch is closed, grounding the hood closed switch signal circuit from the RIM, and the hood ajar portion of the switch is open. During proper operation, the two separate voltage signals at the RIM should never be equal.

Battery voltage is between 9-16 volts

Both the hood open switch signal and the hood closed switch signal are simultaneously in an active or inactive state

Schematic Reference

Remote Function Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Keyless Entry System Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool RIM Hood Open Switch and Hood Closed Switch parameters. With the hood open, the Hood Open Switch parameter should read Active and the Hood Closed Switch parameter should read Inactive. With the hood closed, the Hood Open Switch parameter should read Inactive and the Hood Closed Switch parameter should read Active.

1. Ignition OFF, disconnect the harness connector at the hood ajar switch.
2. Ignition OFF, test for less than 10 ohms between the ground circuit terminal C and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool Hood Closed Switch and Hood Open Switch parameters are Inactive.

⇒	If not the specified value, test the appropriate signal circuit for a short to ground. If the circuit tests normal, replace the RIM.

4. Install a 3A fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool Hood Open Switch parameter is Active.

⇒	If not the specified value, test the signal circuit for a short to voltage or and open/high resistance. If the circuit tests normal, replace the RIM.

5. Install a 3A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool Hood Closed Switch parameter is Active.

⇒	If not the specified value, test the signal circuit for a short to voltage or and open/high resistance. If the circuit tests normal, replace the RIM.

6. If all circuits test normal, test or replace the hood ajar switch.

Hood Ajar Switch

1. Ignition OFF, disconnect the harness connector at the hood ajar switch.
2. With the switch in the hood closed position, test for infinite resistance between the ground terminal C and the signal terminal A.

⇒	If not infinite, replace the hood ajar switch.

3. Test for less than 2.0 ohms between the ground terminal C and the signal terminal B.

⇒	If greater than the specified range, replace the hood ajar switch.

4. With the switch in the hood open position, test for infinite resistance between the ground terminal C and the signal terminal B.

⇒	If not infinite, replace the hood ajar switch.

5. Test for less than 2.0 ohms between the ground terminal C and the signal terminal A.

⇒	If greater than the specified range, replace the hood ajar switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.