Powertrain Controls - ECM/PCM

DTC 13 Engine Shutoff Solenoid Circuit Fault:

Engine Shutoff Solenoid Circuit Fault:

CIRCUIT DESCRIPTION
When the ignition switch is in the "OFF" position, the engine shutoff solenoid is in the "No Fuel" position. By providing a ground path, the Powertrain Control Module (PCM) energizes the solenoid which then allows fuel to pass into the injection pump.

DTC 13 WILL SET WHEN
Ignition voltage on CKT 981 when PCM is requesting engine shutoff solenoid "ON."
OR
No ignition voltage on CKT 981 when PCM is requesting engine shutoff solenoid "OFF."

ACTION TAKEN (PCM will default to)
A current and history Diagnostic Trouble Code (DTC) 13 will set.

DTC 13 WILL CLEAR WHEN
The fault condition(s) no longer exist.

DTC CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Check for open circuit from ignition switch to the solenoid.
2. Check CKT 981 from solenoid to PCM for open.

DIAGNOSTIC AIDS
An open in CKT 981 or 339 will cause a DTC 13. Also a no start condition will exist.
The Tech 1 scan tool has the ability to turn the engine shut off solenoid "ON" and "OFF." This can be used as a quick operational check.