|
|
Symptom: P1660-REDUNDANT EMERG. STOP PLAUSIBILITY IN AFTER-RUN When Monitored and Set Condition: P1660-REDUNDANT EMERG. STOP PLAUSIBILITY IN AFTER-RUN When Monitored: During after-run, when the engine speed is below 800 RPM and vehicle speed is below 2.5 MPH. Set Condition: The fuel shutdown solenoid is turned off and engine speed does not drop below 500 RPM. POSSIBLE CAUSES INTERMITTENT CONDITION FUEL SHUTDOWN SOLENOID CONTROL CIRCUIT SHORTED TO VOLTAGE FUEL SHUTDOWN SOLENOID (FUEL INJECTION PUMP) SHORTED INTERNALLY INTERNAL FUEL INJECTION PUMP TEST ENGINE CONTROL MODULE TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → No → 2 Turn the ignition off. All Yes → No → Repair the Fuel Shutdown Solenoid Control circuit for a short to NOTE: Remove the jumper wire from the ASD/Diesel Power Relay connec- 188 DRIVEABILITY - DIESEL |