Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC) » P2100, P2103 throttle control motor relay
Diagnosis Procedure

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

  1. Turn ignition switch OFF.
  2. Check voltage between ECM harness connector and ground 

Is the inspection result normal?

YES >> GO TO 5.

NO >> GO TO 2.

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

  1. Disconnect ECM harness connector.
  2. Disconnect IPDM E/R harness connector F115.
  3. Check the continuity between ECM harness connector and IPDM E/R harness connector. 
  4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

  • IPDM E/R connector F42
  • Harness for open or short between IPDM E/R and ECM

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

4.CHECK FUSE

  1. Disconnect 20 A fuse (No. 53) from IPDM E/R.
  2. Check 20 A fuse for blown.

Is the inspection result normal?

YES >> GO TO 9.

NO >> Replace 20 A fuse.

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

  1. Check voltage between ECM harness connector and ground under the following conditions.

Is the inspection result normal?

YES >> GO TO 8.

NO >> GO TO 6.

6.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 F42.
  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
  5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 8.

NO >> GO TO 7.

7.DETECT MALFUNCTIONING PART

Check the following.

  • IPDM E/R connector F42
  • Harness for open or short between IPDM E/R and ECM

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

8.CHECK FUSE

  1. Disconnect 15 A fuse (No. 52) from IPDM E/R.
  2. Check 15 A fuse for blown.

Is the inspection result normal?

YES >> GO TO 9.

NO >> Replace 15 A fuse.

9.CHECK INTERMITTENT INCIDENT

Refer to GI, "Intermittent Incident".

Is the inspection result normal?

YES >> Replace IPDM E/R. Refer to PCS, "Removal and Installation" (WITH I-KEY) or PCS, "Removal and Installation" (WITHOUT I-KEY).

NO >> Repair or replace harness or connectors.

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