No Response Powertrain Control Module
WARNING: This page is about a different car, the 1999 Dodge Pickup and 1999 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For connector terminal identification and wiring diagrams, see
BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST VER-1
after each repair.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.
- If engine does not run, see appropriate BASIC DIAGNOSTIC PROCEDURES article in ENGINE PERFORMANCE. If engine runs, go to next step.
- Turn ignition off. Disconnect Powertrain Control Module (PCM). PCM is mounted in right side of firewall. Turn ignition on. Connect jumper wire between ground and PCM connector C3 terminal. No. 30 (Violet/Brown wire). Using scan tool, perform CCD BUS test. If scan tool does not display SHORT TO GROUND, repair open Violet/Brown wire. If scan tool displays SHORT TO GROUND, go to next step.
- Move jumper wire to PCM connector C3 terminal No. 28 (White/Black wire). Perform CCD BUS test. If scan tool does not display SHORT TO GROUND, repair open White/Black wire. If scan tool displays SHORT TO GROUND, replace PCM.