Code P0615, check engine light on?

Hello,
Please note, P0615 stands for "STARTER RELAY CIRCUIT" which is general yet more specific than just the starter. What flags this code is when the starter monitor system is OFF when the ignition is turned ON while the car is in Park or Neutral. This is an electrical diagnosis and I will be happy to walk you through this if you'd like. I will paste the diagnostic instructions below and an electrical diagram of the relay circuit. It could certainly be possible that the relay may have something to do with it, but we don't know for sure.

Diagnosis Procedure
1. CHECK STARTER RELAY SIGNAL
1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector terminal and ground.

Is the inspection result normal?
YES - Check starter relay circuit. Refer to See: Starting System > Electrical.
NO - GO TO 2.

2. CHECK HARNESS BETWEEN A/T ASSEMBLY AND IPDM E/R (PART 1)
1. Turn ignition switch OFF.
2. Disconnect A/T assembly connector and IPDM E/R connector.
3. Check continuity between A/T assembly vehicle side harness connector terminal and IPDM E/R vehicle side harness connector terminal.

Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.

3. CHECK HARNESS BETWEEN A/T ASSEMBLY AND IPDM E/R (PART 2)
Check continuity between A/T assembly vehicle side harness connector terminal and ground.

Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.

4. CHECK INTERMITTENT INCIDENT
Refer to See: Vehicle > Initial Inspection and Diagnostic Overview > Intermittent Incident.

Is the inspection result normal?
YES - Replace A/T assembly. See: Automatic Transmission/Transaxle > Removal and Replacement > Exploded View
NO - Repair or replace damaged parts.

Note that the starter relay is in the IPDM box, which is located in the right rear section of the engine bay. Some of the relays in this section are internal to the IPDM, so be careful during your testing. Let me know if I can help any further.

William

Hello,

No problem. However, the diagram above is for the starting circuit. The procedure will begin with checking Terminal 30 of connector E5 of the IPDM, make sure you get battery voltage (12.6v) when the transmission is in Park or Neutral, and 0 volts in any other gear.

If it is normal, then we can focus on the wiring diagram I sent above. If it is not normal, then we need to keep probing wires between the transmission and the IPDM because the TCM plays a part in starting the vehicle.

Let us know,
William