1.CHECK OVERALL FUNCTION-I With CONSULT-III

1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.
3. Check “BRAKE SW1” indication under the following conditions.

   Monitor item | Condition | Indication
   BRAKE SW1 | Brake pedal | Slightly depressed | OFF
   Fully released | ON

Without CONSULT-III

1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals as follows.

   ECM | Condition | Voltage (V)
   Connector | + | –
   Terminal | Terminal
   M107 | 117 (ASCD brake switch signal) | 128 | Brake pedal | Slightly depressed | Approx. 0
   Fully released | Battery voltage

Is the inspection result normal?
YES>>GO TO 2.
NO>>GO TO 3.
2.CHECK OVERALL FUNCTION-II
With CONSULT-III
Select “BRAKE SW2” and check indication under the following conditions.

Monitor item | Condition | Indication
BRAKE SW2 | Brake pedal | Slightly depressed | ON
Fully released | OFF

Without CONSULT-III
Check the voltage between ECM harness connector terminals under the following conditions.

ECM | Condition | Voltage (V)
Connector | + | –
Terminal | Terminal
M107 | 110 (Stop lamp switch signal) | 128 | Brake pedal | Slightly depressed | Battery voltage
Fully released | Approx. 0

Is the inspection result normal?
YES>>GO TO 13.
NO>>GO TO 8.
3.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

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

   ASCD brake switch | Ground | Voltage
   Connector | Terminal
   E109 | 1 | Ground | Battery voltage

Is the inspection result normal?
YES>>GO TO 5.
NO>>GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.

- Fuse block (J/B) connector E103
- 10A fuse (No. 3)
- Harness for open or short between ASCD brake switch and fuse

>>Repair open circuit or short to ground in harness or connectors.
5.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.

   ASCD brake switch | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   E109 | 2 | M107 | 117 | Existed

4. 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 E106, M6
- Harness for open or short between ECM and ASCD brake switch

>>Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK ASCD BRAKE SWITCH
Refer to Component Inspection (ASCD Brake Switch) (GT-R certified NISSAN dealer)
Is the inspection result normal?
YES>>GO TO 13.
NO>>Replace ASCD brake switch.
8.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check the voltage between stop lamp switch harness connector and ground.

   Stop lamp switch | Ground | Voltage
   Connector | Terminal
   E110 | 1 | Ground | Battery voltage

Is the inspection result normal?
YES>>GO TO 10.
NO>>GO TO 9.
9.DETECT MALFUNCTIONING PART
Check the following.

- Fuse block (J/B) connector E103
- 10A fuse (No. 7)
- Harness for open or short between stop lamp switch and battery

>>Repair open circuit, short to ground or short to power in harness or connectors.
10.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.
2. Check the continuity between stop lamp switch harness connector and ECM harness connector.

   Stop lamp switch | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   E110 | 2 | M107 | 110 | Existed

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

Is the inspection result normal?
YES>>GO TO 12.
NO>>GO TO 11.
11.DETECT MALFUNCTIONING PART
Check the following.

- Fuse block (J/B) connectors E103, M2
- Harness for open or short between ECM and stop lamp switch

>>Repair open circuit, short to ground or short to power in harness or connectors.
12.CHECK STOP LAMP SWITCH
Refer to Component Inspection (Stop Lamp Switch) (GT-R certified NISSAN dealer) .
Is the inspection result normal?
YES>>GO TO 13.
NO>>Replace stop lamp switch.
13.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END