DTC 64

DTC 64

Step 1-10:

Circuit Description
The Electronic Brake Control Module (EBCM) constantly receives a Throttle Position (TP) sensor signal every 200 milliseconds.

Conditions for Running the DTC
DTC 64 can be set anytime the ignition switch is in the ON position.

Conditions for Setting the DTC
The EBCM does not receive a TP sensor signal for at least 6 seconds.

Action Taken When the DTC Sets
- The EBCM disables the traction control system until the EBCM receives five consecutive messages from the TP sensor.
- 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 to ground in the ASM 5V REF circuit
- An open or high resistance in the ASM 0V REF circuit
- An open, high resistance or short in the ASM throttle position signal circuit
- 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 image refer to step numbers on the diagnostic table.
3. This step tests the throttle position circuits of the ASM for an open, high resistance or short.
4. This step tests the 5V REF circuit of the ASM for an open, high resistance or short.
5. This step tests the 0V REF circuit of the ASM for an open, high resistance or short.