DTC Advanced Diagnostics: P16F5 (3.0L Engine)
DTC P16F5: Starter Cut Relay 1 Control Circuit High Voltage
General Description
The starter motor is controlled by on/off of the starter cut relay 1 circuit and the starter cut relay 2 circuit to start the engine. The monitor circuit in the powertrain control module (PCM) monitors the voltage level of the ST_CUT_RLY1_CL- terminal. If the voltage level is abnormal, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 500 milliseconds or more |
| DTC Type | One drive cycle, MIL off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [Battery] | 9.2 V | - |
| Starter | On | |
| Vehicle | ON mode | |
[ ]: HDS Parameter
Malfunction Threshold
The ST_CUT_RLY1_CL- terminal voltage level is off (high voltage) for at least 500 milliseconds despite the PCM outputs on to the starter cut relay 1 circuit.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Starter cut relay 1 circuit ST_CUT_RLY1_CL- line short to power
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.