DTC C1323 PCM to EBTCM Delivered Torque Circuit Malfunction - that's what I sometimes get. Seen only when I go WOT in 1st gear. Apparently the engine is not reducing torque output enough to keep the traction control happy.
Wondering if anyone had ever seen it. I do have injector shutting off disabled in my tune (as suggested by Jerry's Tuning Guide).
From the FSM:
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 DTC stores.
• The ETS/TCS disables.
• The amber ETS/TCS 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.
• 100 drive cycles pass with no DTC(s) detected.