P1290

P1290, P2100, P2103 THROTTLE CONTROL MOTOR RELAY





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.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V.
Which DTC is detected?
P1290, P2100-GO TO 2.
P2103 - GO TO 3.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1290 AND P2100
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END
3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103
1. Turn ignition switch ON and wait at least 1 second.
2. Check DTC.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector E7.
4. Check the continuity between IPDM E/R harness connector and ECM harness connector.





5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E3, F1
- 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.
3.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
1. Check the continuity between IPDM E/R sensor harness connector and ECM harness connector.





2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E3, F1
- 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.
5.CHECK FUSE
1. Disconnect 15 A fuse (No. 51) from IPDM E/R.
2. Check 15 A fuse for blown.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace 15A fuse.
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - Replace IPDM E/R. Service and Repair.
NO - Repair or replace harness or connectors.