DTC 65

DTC 65

Test 1-8:

Step 9-18:

Circuit Description
The throttle relaxer assembly is controlled by the Accelerator And Servo Control Module (ASM).

Conditions for Running the DTC
DTC 65 can be set anytime the ignition switch is in the ON position.

Conditions for Setting the DTC
The Electronic Brake Control Module (EBCM) detects one of the following conditions in the throttle relaxer circuitry:
- An open or high resistance
- A short to ground
- A short to voltage

Action Taken When the DTC Sets
- The EBCM disables the traction control system for the remainder of the ignition cycle.
- The TRAC OFF warning indicator turns ON.

Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTCs function is used.

Diagnostic Aids
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.

The following are possible causes of the malfunction:
- An open, high resistance, or a short in the ASM motor + circuit
- An open, high resistance, or a short in the ASM motor- circuit
- An open or high resistance in the ASM ground circuits
- An open, high resistance or short to ground in the ASM battery voltage circuits
- An throttle relaxer assembly malfunction
- An internal ASM malfunction

If an intermittent malfunction exists, refer to Testing for Intermittent and Poor Connections Diagnostic Aids.

Test Description
The numbers in the images, refer to step numbers on the diagnostic table.
3. This step tests the ground circuits of the ASM for an open or high resistance.
5. This step tests the throttle relaxer assembly.
6. This step tests the motor + circuits of the ASM for an open or high resistance.
7. This step tests the motor - circuits of the ASM for an open or high resistance.
8. This step tests the motor + circuits of the ASM for a short to ground.
9. This step tests the motor - circuits of the ASM for a short to ground.
10. This step tests the motor + circuits of the ASM for a short to voltage.
11. This step tests the motor - circuits of the ASM for a short to voltage.