DTC P1650 [AJ (3.0L Duratec)]

id0102a4826700

DTC P1650

PSP switch circuit malfunction

DETECTION CONDITION

• In KOEO Self-Test, this DTC indicates the PSP input to the PCM is high. In KOER Self-Test, this DTC indicates that the PSP input did not change state.

POSSIBLE CAUSE

• PSP switch malfunction
• Connector or terminal malfunction
• Short to GND circuit between PSP switch terminal 1 and PCM terminal 31
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME DATA on repair order, then go to next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Check for related Service Bulletins and/or on-line repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to available repair information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3
INSPECT PSP SWITCH CONNECTOR FOR POOR CONNECTION
• Turn ignition key to OFF.
• Disconnect PSP switch connector.
• Check for poor connection (such as damaged, pulled-out pins, and corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 7.
No
Go to next step.
4
INSPECT PSP SWITCH SIGNAL CIRCUIT FOR SHORT TO GND
• Turn ignition key to OFF.
• Check continuity between PSP switch terminal 1 (harness-side) and body GND.
• Is there continuity?
Yes
Repair or replace harness for short to GND, then go to Step 7.
No
Go to next step.
5
INSPECT PSP SWITCH
• Inspect PSP switch.
• Is there any malfunction?
Yes
Replace PSP switch, then go to Step 7.
No
Go to next step.
6
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn ignition key to OFF.
• Disconnect PCM connector.
• Check for poor connection (such as damaged, pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to next step.
No
Go to next step.
7
VERIFY TROUBLESHOOTING OF DTC P1650 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Start engine.
• Clear DTC from PCM memory using WDS or equivalent.
• Perform KOEO/KOER Self-Test.
• Is same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to next step.
8
VERIFY AFTER SERVICE PRECAUTION
• Perform "AFTER SERVICE PRECAUTION".
• Are any DTCs present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.