1.CHECK SET-UP SWITCH (SUSPENSION) MODE LAMP POWER SUPPLY

1. Turn the ignition switch OFF.
2. Disconnect the set-up switch (suspension) harness connector.
3. Check the voltage between the set-up switch (suspension) harness connector.

   Set-up switch (suspension) | — | Measuring condition | Voltage
   Connector | Terminal
   M73 | 18 | Ground | Ignition switch: ON | Battery voltage
   Ignition switch: OFF | Approx. 0 V

Is the inspection result normal?
YES>>GO TO 2.
NO>>
Check the following items, and repair or replace the malfunctioning parts.

- Open circuit in 10 A fuse (#45)

- Short circuit between the 10 A fuse (#45) connector and set-up switch (suspension) harness connector terminal 18

- Open circuit between the ignition switch and set-up switch (suspension) harness connector terminal 18
- Battery or ignition switch

2.CHECK SET-UP SWITCH (SUSPENSION) MODE LAMP CIRCUIT

1. Disconnect the E-SUS control unit harness connector.
2. Check the continuity between the E-SUS control unit harness connector and set-up switch (suspension) harness connector.

   E-SUS control unit | Set-up switch (suspension) | Continuity
   Connector | Terminal | Connector | Terminal
   M110 | 5 | M73 | 19 | Existed
   9 | 8 | Existed

3. Check the continuity between the E-SUS control unit harness connector and ground.

   E-SUS control unit | — | Continuity
   Connector | Terminal
   M110 | 5 | Ground | Not existed
   9

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace the malfunctioning harness or connector.
3.CHECK SET-UP SWITCH (SUSPENSION) MODE LAMP
Check the set-up switch (suspension) mode lamp. Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>Check pin terminal and connection of each harness connector for damage or loose connection.
NO>>Replace the set-up switch (suspension).