1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace ground connection.
2.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
Check the voltage between ECM harness connector terminals as follows.

DTC | ECM | Condition | Voltage (V)
+ | –
Connector | Terminal | Connector | Terminal
P1233 | F101 | 1 | M107 | 128 | Ignition switch OFF | Approx. 0
Ignition switch ON | Battery voltage
P2101 | F102 | 49 | Ignition switch OFF | Approx. 0
Ignition switch ON | Battery voltage

Is the inspection result normal?
YES>>GO TO 9.
NO>>GO TO 3.
3.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.
4. Check the continuity between IPDM E/R harness connector and ECM harness connector.

   IPDM E/R | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   E7 | 70 | M107 | 127 | Existed

5. 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 E106, M6
- 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 THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1. Check the continuity between IPDM E/R harness connector and ECM harness connector.

   DTC | IPDM E/R | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   P1233 | E7 | 54 | F101 | 1 | Existed
   P2101 | F102 | 49

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

Is the inspection result normal?
YES>>GO TO 7.
NO>>GO TO 6.
6.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.
7.CHECK FUSE

1. Disconnect 15A fuse (No. 51) from IPDM E/R.
2. Check 15A fuse for blown.

Is the inspection result normal?
YES>>GO TO 8.
NO>>Replace 15A fuse.
8.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Is the inspection result normal?
YES>>Replace IPDM E/R.
NO>>Repair or replace harness or connectors.
9.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

   DTC | Electric throttle control actuator | ECM | Continuity
   Bank | Connector | Terminal | Connector | Terminal
   P1233 | 2 | F26 | 1 | F102 | 2 | Existed
   5 | Not existed
   2 | 2 | Not existed
   5 | Existed
   P2101 | 1 | F9 | 5 | F101 | 50 | Not existed
   53 | Existed
   6 | 50 | Existed
   53 | Not existed

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

Is the inspection result normal?
YES>>GO TO 10.
NO>>Repair or replace malfunctioning part.
10.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve (1) and the housing.

Is the inspection result normal?
YES>>GO TO 11.
NO>>Remove the foreign matter and clean the electric throttle control actuator inside.
11.CHECK THROTTLE CONTROL MOTOR
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 12.
NO>>GO TO 13.
12.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Is the inspection result normal?
YES>>GO TO 13.
NO>>Repair or replace harness or connectors.
13.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace malfunction electric throttle control actuator.
2. Go to Special Repair Requirement (GT-R certified NISSAN dealer).

>>INSPECTION END