• | 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 |
---|---|---|---|---|
Signal | P0615 | P0615 | -- | -- |
Control | P0615 | P0615 | P0615 | -- |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: Ignition ON, Engine OFF. Parameter Normal Value: OK | |||
Signal | Fault | Fault | OK |
Control | Fault | Fault | OK |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: Ignition ON, Engine OFF. Parameter Normal Value: OK | |||
Signal | Fault | Fault | OK |
Control | Fault | Fault | OK |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: Cranking. Parameter Normal Value: OK * | |||
Signal | OK | OK | Fault |
Control | OK | OK | Fault |
* The parameter always displays Not Run when crank is not requested. |
When the ignition switch is placed in the start position, a discrete signal is supplied to the engine control module (ECM) notifying it that the ignition is in the start position. The ECM then verifies that the transmission is in park or neutral. If it is, then the ECM supplies ground to the control circuit of the STRTR relay. When this occurs, battery voltage is supplied through the switch of the STRTR relay to terminal A (4.2L LL8) or S (5.3L LH6 / 6.0L LS2) of the starter solenoid. The ECM monitors the voltage on the control circuit of the STRTR relay. If the circuit becomes open or shorted, then the ECM will set DTC P0615.
• | The ignition is ON. |
• | The system voltage is between 9.5-18 volts. |
The ECM detects improper voltage on the control circuit of the STRTR relay.
DTC P0615 is a type C DTC.
DTC P0615 is a type C 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 the test lamp does not illuminate, test the PNP signal circuit for an open/high resistance. |
⇒ | If the test lamp is always ON, test the control circuit for short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. |
⇒ | If not within the specified range, replace the relay. |
• | 30 and 86 |
• | 30 and 87 |
• | 30 and 85 |
• | 85 and 87 |
⇒ | If not the specified value, replace the relay. |
⇒ | If greater than specified range, replace the relay. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM replacement, setup, and programming. |