The PCM has the ability to set a diagnostic trouble code (DTC) if the engine stalls when the ignition has NOT been turned OFF. This DTC may aid in intermittent diagnosis of a customer complaint of intermittent engine stall. The scan tool Failure Record information can be duplicated under the same stall conditions in an attempt to reproduce the occurrence. Since DTC P1599 is a type D DTC, the PCM will not command the MIL or SERVICE telltale ON. This DTC can set due to driver error. For example, a vehicle equipped with a manual transaxle in which the clutch was released too quickly causing the engine to stall.
DTC Parameters
DTC P1599 will set if the PCM has detected an engine stall condition when:
| • | The engine is in run mode. |
| • | The ignition voltage is present on circuit 839. |
| • | The CKP signal at the PCM is NOT detected. |
DTC P1599 is a type D DTC.
Diagnostic Aids
If other DTCs are present, especially DTC P0336, diagnose those DTCs first.
Verify the driver did not induce the stall condition.
Use the scan tool Failure Record to attempt to reproduce the condition if the engine stall is a complaint.
