C1323

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CIRCUIT DESCRIPTION
The traction control system uses the antilock brake system in conjunction with the PCM fuel and ignition controls to limit drive wheel slippage during acceleration. The PCM controlled portion of the traction control system reduces engine torque by performing one or both of the following actions:
- Retarding the spark timing and alternating the air/fuel ratio
- Shutting off up to three injectors
The EBCM/EBTCM sends a torque request to the PCM via a Pulse Width Modulated (PWM) signal requesting the desired torque level for proper traction control system operation (CKT 463). The PCM then provides a delivered torque PWM signal (CKT 464) informing the EBCM/EBTCM how much actual torque the engine produces.

CONDITIONS FOR SETTING THE DTC
DTC C1323 will set when one of the following conditions occurs:
- A malfunction exists in the delivered torque circuit (CKT 464).
- The signal is out of range.

ACTION TAKEN WHEN THE DTC SETS
- A malfunction Diagnostic Trouble Code (DTC) stores.
- The Traction Control System (TCS) disables.
- The amber TCS indicator turns on.

CONDITIONS FOR CLEARING THE DTC
- The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTC function is used.
- 100 drive cycles pass with no DTC detected.

DIAGNOSTIC AIDS

The following conditions may cause an intermittent malfunction:
- A poor connection
- Rubbed-through wire insulation
- A broken wire inside the insulation
Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction. Refer to the Scan Tool manual for the procedure.

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:
- Backed out terminals
- Improper mating
- Broken locks
- Improperly formed or damaged terminals
- Poor terminal-to-wiring connections
- Physical damage to the wiring harness