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6E–448 6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS DTC P1640 – Driver-1-Output Circuit Fault (ODM) (Cont'd) Step No Yes Value(s) Action 7 1. Leave the PCM connector for the lamp driver circuit disconnected. 2. Ignition “ON”. connector for the affected lamp driver circuit. Was the voltage equal to the specified value? B+ Go to Step 15 Go to Step 8 8 1. Ignition “ON”. lamp circuit. Was battery voltage available at the fuse? — Go to Step 10 Go to Step 9 9 Repair the open circuit between the ignition switch and Is the action complete? — Verify repair — 10 1. Ignition “OFF”. driver terminal. 3. Connect an ohmmeter between a good ground and the PCM connector for the affected driver. Did the ohmmeter indicate continuity? — Go to Step 11 Go to Step 12 11 Repair the short to ground between the affected Is the action complete? — Verify repair — 12 Repair the open circuit between the fuse and the PCM Is the action complete? — Verify repair — 13 1. Connect the PCM. DVM. Was the voltage equal to the specified value? +B Go to Step 15 Go to Step 14 14 1. Run the engine at idle. circuit. Was battery voltage available at the fuse? — Go to Step 10 Go to Step 9 15 Replace the PCM. IMPORTANT: The replacement PCM must be On-Vehicle Service in Powertrain Control Module and Sensors for And also refer to latest Service Bulletin. Check to see if the Latest software is released or not. Is the action complete? — Verify repair — |