1.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
2. Check the voltage between ECM harness connector terminals under the following conditions.

   ECM | Voltage
   Connector | + | –
   Terminal | Terminal
   M107 | 121 | 128 | Battery voltage
   122

Is the inspection result normal?
YES>>GO TO 2.
NO>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
2.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Turn ignition switch ON.
4. Check the voltage between condenser harness connector and ground.

   Condenser | Ground | Voltage
   Connector | Terminal
   F4 | 1 | Ground | Battery voltage

Is the inspection result normal?
YES>>GO TO 5.
NO>>GO TO 3.
3.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

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

   IPDM E/R | Condenser | Continuity
   Connector | Terminal | Connector | Terminal
   E7 | 53 | F4 | 1 | Existed

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

Is the inspection result normal?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors E3, F1
- Harness for open or short between IPDM E/R and condenser

>>Repair open circuit short to ground or short to power in harness or connectors.
5.CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Check the continuity between condenser harness connector and ground.

   Condenser | Ground | Continuity
   Connector | Terminal
   F4 | 2 | Ground | Existed

3. Also check harness for short to power.

Is the inspection result normal?
YES>>GO TO 6.
NO>>Repair open circuit or short to power in harness or connectors.
6.CHECK CONDENSER
Refer to Component Inspection (Condenser) (GT-R certified NISSAN dealer)
Is the inspection result normal?
YES>>GO TO 7.
NO>>Replace condenser.
7.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV

1. Reconnect all harness connectors disconnected.
2. Disconnect ignition coil harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ignition coil harness connector and ground.

   Ignition coil | Ground | Voltage
   Cylinder | Connector | Terminal
   1 | F10 | 3 | Ground | Battery voltage
   2 | F27 | 3
   3 | F11 | 3
   4 | F28 | 3
   5 | F12 | 3
   6 | F29 | 3

Is the inspection result normal?
YES>>GO TO 9.
NO>>GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following.

- Harness connector F1
- Harness for open or short between ignition coil and harness connector F1

>>Repair or replace harness or connectors.
9.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Check the continuity between ignition coil harness connector and ground.

   Ignition coil | Ground | Continuity
   Cylinder | Connector | Terminal
   1 | F10 | 2 | Ground | Existed
   2 | F27 | 2
   3 | F11 | 2
   4 | F28 | 2
   5 | F12 | 2
   6 | F29 | 2

3. Also check harness for short to power.

Is the inspection result normal?
YES>>GO TO 10.
NO>>Repair open circuit or short to power in harness or connectors.
10.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.
2. Check the continuity between ignition coil harness connector and ECM harness connector.

   Ignition coil | ECM | Continuity
   Cylinder | Connector | Terminal | Connector | Terminal
   1 | F10 | 1 | F101 | 10 | Existed
   2 | F27 | 1 | 9
   3 | F11 | 1 | 13
   4 | F28 | 1 | 33
   5 | F12 | 1 | 34
   6 | F29 | 1 | 38

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

Is the inspection result normal?
YES>>GO TO 11.
NO>>Repair open circuit short to ground or short to power in harness or connectors.
11.CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to Component Inspection (Ignition Coil with Power Transistor) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 12.
NO>>Replace malfunctioning ignition coil with power transistor.
12.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END