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Hood Ajar Indicator/Message Malfunction

Hood Ajar Indicator/Message Malfunction

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category.


Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Hood Ajar Switch Signal

B3006 02

B3006 04

B3006 01

-

Ground

-

B3006 04

-

-



Circuit/System Description

The body control module (BCM) monitors the voltage input of the hood ajar switch signal circuit.

Reference Information

Schematic Reference


• Immobilizer Schematics

• Remote Function Schematics

• Theft Deterrent System Schematics


Connector End View Reference

Component Connector End Views

Description and Operation

Keyless Entry System Description and Operation (without ATH) Keyless Entry System Description and Operation (with ATH)

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool BCM Hood Position parameter. With the hood open, the Hood Position parameter should read open. With the hood closed, the Hood Position parameter should read closed.

Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the B55 Hood Ajar Switch.

2. Ignition OFF, test for less than 8 Ω between the ground circuit terminal C and ground.

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

4. Ignition ON, test for greater 11 V between the signal circuit terminal B and ground.

5. If less than the specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the B55 Hood Ajar Switch.

6. If all circuits test normal, test or replace the K9 Body Control Module.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Hood Primary Latch Replacement

• Control Module References for BCM replacement, programming, and setup