P2103

P2100, P2103 Throttle Control Motor Relay

Component Description

Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM.

On Board Diagnosis Logic

These self-diagnoses have one trip detection logic.





Fail-Safe Mode

When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.






DTC Confirmation Procedure

NOTE:

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

Procedure for DTC P2100

With SDT

1) Turn ignition switch ON and wait at least 2 seconds.
2) Start engine and let it idle for 5 seconds.
3) Check DTC.
4) If DTC is detected, go to "Diagnosis Procedure".

With GST

Follow the procedure "With SDT" above.

Procedure for DTC P2103

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8 V.

With SDT

1) Turn ignition switch ON and wait at least 1 second.
2) Check DTC.
3) If DTC is detected, go to "Diagnosis Procedure".

With GST

Follow the procedure "With SDT" above.

Diagnosis Procedure

1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

1 Turn ignition switch OFF.
2 Check voltage between ECM terminal 104 and ground with SDT or tester.











OK or NG
OK
GO TO 4.
NG
GO TO 2.

2. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II

1 Disconnect ECM harness connector.
2 Disconnect IPDM E/R harness connector E122.
3 Check continuity between ECM terminal 104 and IPDM E/R terminal 47.
Refer to Wiring Diagram.






4 Also check harness for short to ground and short to power.

OK or NG
OK
GO TO 3.
NG
Repair open circuit, short to ground or short to power in harness or connectors.

3. CHECK FUSE

1 Disconnect 20 A fuse (No.52).
2 Check 20 A fuse for blown.

OK or NG
OK
GO TO 7.
NG
Replace 20 A fuse.

4. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

Check voltage between ECM terminal 3 and ground under the following conditions with SDT or tester.











OK or NG
OK
GO TO 7.
NG
GO TO 5.

5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1 Turn ignition switch OFF.
2 Disconnect ECM harness connector.
3 Disconnect IPDM E/R harness connector E119.
4 Check continuity between ECM terminal 3 and IPDM E/R terminal 6.
Refer to Wiring Diagram.






5 Also check harness for short to ground and short to power.

OK or NG
OK
GO TO 7.
NG
GO TO 6.

6. DETECT MALFUNCTIONING PART

Check the following.
- Harness connectors E2, F32
- Harness for open or short between ECM and IPDM E/R


Repair open circuit, short to ground or short to power in harness or connectors.

7. CHECK INTERMITTENT INCIDENT

Refer to [Service Information for Electrical Incident: Intermittent Incident] Service Information for Electrical Incident: Intermittent Incident.

OK or NG
OK
Replace IPDM E/R. Refer to [IPDM E/R: Removal and Installation of IPDM E/R] Service and Repair.
NG
Repair or replace harness or connectors.