• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Starter Relay Control | P0615 | P0615 | P0615 | -- |
When the Ignition switch is placed in the start position B+ is supplied to the coil side of the STARTER relay, the powertrain control module (PCM) / engine control module (ECM) also receives the 12 V signal that crank has been requested, The PCM/ECM verifies the vehicle is in PARK from information received from the transmission control module (TCM) and conditions are acceptable for engine cranking, the PCM/ECM will then ground the control circuit of the STARTER relay. With STARTER relay closed B+ is supplied to the starter solenoid and the engine will begin cranking.
When the Ignition switch is placed in the start position and Clutch Start Switch closed (clutch pedal depressed) B+ is supplied to the coil side of the STARTER relay, the powertrain control module (PCM) / engine control module (ECM) also receives the 12 V signal that crank has been requested, The PCM/ECM verifies the clutch pedal is depressed and conditions are acceptable for engine cranking, the PCM/ECM will then ground the control circuit of the STARTER relay. With STARTER relay closed B+ is supplied to the starter solenoid and the engine will begin cranking.
• | The Ignition is in the START position. |
• | The system voltage is between 9.5-18 volts. |
The ECM detects improper voltage on the control circuit of the starter relay.
DTC P0615 is a C type DTC.
DTC P0615 is a C type DTC.
Starting and Charging Schematics
Starting System Description and Operation
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
⇒ | If not within the specified range, replace the crank relay. |
⇒ | If the test lamp is always On, test the control circuit for short to ground. |
⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. |
⇒ | If the circuit tests normal replace the ECM/PCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM/PCM replacement, setup, and programming |