1.CHECK STARTER RELAY OUTPUT SIGNAL

1. Check voltage between BCM harness connector and ground.

   (+) | (–) | Condition | Voltage (V) (Approx.)
   BCM
   Connector | Terminal | Ignition switch | Brake pedal | Shift lever
   M121 | 52 | Ground | ON | Depressed | P or N | Battery voltage
   Other than above | 0

Is the inspection result normal?
YES>>GO TO 3.
NO>>GO TO 2.
2.CHECK STARTER RELAY OUTPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Disconnect BCM connector.
4. Check continuity between BCM harness connector and IPDM E/R harness connector.

   BCM | IPDM E/R | Continuity
   Connector | Terminal | Connector | Terminal
   M121 | 52 | E6 | 46 | Existed

5. Check continuity between BCM harness connector and ground.

   BCM | Ground | Continuity
   Connector | Terminal
   M121 | 52 | Not existed

Is the inspection result normal?
YES>>Replace IPDM E/R. Refer to Removal and Installation.
NO>>Repair or replace harness.
3.CHECK STARTER RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check voltage between IPDM E/R harness connector and ground.

   (+) | (–) | Voltage (V) (Approx.)
   IPDM E/R
   Connector | Terminal
   E6 | 36 | Ground | Battery voltage

Is the inspection result normal?
YES>>GO TO 4.
NO>>Check harness for open or short between IPDM E/R and battery.
4.REPLACE BCM

1. Replace BCM. Refer to Work Procedure and Work Procedure.
2. Perform DTC CONFIRMATION PROCEDIURE. Refer to DTC Logic.

Is the inspection result normal?
YES>>INSPECTION END
NO>>Replace IPDM E/R. Refer to Removal and Installation.