Chrysler 2005 Crossfire SRT6 Service Manual page 3250

21 - 180 NAG1 - ELECTRICAL DIAGNOSTICS
(P1793) ENGINE TORQUE REDUCTION (CONTINUED)
4.
CAN C BUS (+) / (-) CIRCUIT OPEN
Turn the ignition off.
Disconnect the PCM C4 harness connector.
Disconnect the TCM C3 harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the CAN C BUS (+) circuit from the PCM
C4 harness connector to the TCM C3 harness connector.
Measure the resistance of the CAN C BUS (-) circuit from the PCM C4
harness connector to the TCM C3 harness connector.
Is the resistance of both CAN C BUS circuits below 5.0 ohms?
Yes >> Go To 5
No >> Repair the faulty CAN C BUS circuit(s) for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
5.
PCM - ENGINE TORQUE REDUCTION
With the ignition off.
Replace and program the Powertrain Control Module. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL MODULE - REMOVAL).
Turn the ignition on.
With the DRB III , erase Transmission DTCs.
Start the engine.
With the brakes firmly applied, shift the gear selector into drive.
With the DRB III , read Transmission DTCs.
Did DTC (P1793) ENGINE TORQUE REDUCTION set again?
Yes >> Replace the Transmission Control Module. (Refer to 8 -
ELECTRICAL/ELECTRONIC
TRANSMISSION CONTROL MODULE - REMOVAL).
Perform NAG1 TRANSMISSION VERIFICATION TEST.
No >> Test Complete.
CONTROL MODULES/POWERTRAIN
CONTROL MODULES/
ZH