Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

1) CHECK FOR A DTC C121C-TORQUE REQUEST SIGNAL DENIED
NOTE: This DTC must be active for the results of this test to be valid and this DTC may set while driving under severe load conditions.

Turn the ignition on.

With the scan tool, read and record DTCs.

With the scan tool, read and record Freeze Frame information.

With the scan tool, erase DTCs.

Cycle the ignition switch from off to on.

Start Engine.

With the scan tool, read and record DTCs.

Does the scan tool display: C121C-TORQUE REQUEST SIGNAL DENIED?

Yes
1. Go To 2).
No
1. Refer to ABS INTERMITTENT CONDITION .
2. Perform ABS VERIFICATION TEST - VER 1 .
2) CHECK THE POWERTRAIN DTCs
2)

With the scan tool, read and record Powertrain DTCs.

Were any Powertrain ESP related DTCs found?

Yes
1. Replace the Powertrain Module in accordance with the Service Information.
2. Perform the POWERTRAIN VERIFICATION TEST for gas engines.
No
1. Replace the Anti-Lock Brake Module in accordance with the Service Information.
2. Perform ABS VERIFICATION TEST - VER 1 .