DTC C1A01: Power Supply Cir, C1A02 Power Supply Cir 2

1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
4. Check if "C1A01: POWER SUPPLY CIR" (DTC 1) or "C1A02: POWER SUPPLY CIR 2" (DTC 2) is indicated in self-diagnosis item in the display.

Is malfunction indicated? 

Yes: GO TO  2.

No: Poor connector connection

1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed terminals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector.
3. Turn ignition switch ON.
4. Check voltage between ICC sensor integrated unit harness connector and ground.
   TERMINALS VOLTAGE SPECIFICATION TABLE
   
   

   Terminals			Voltage (Approx.)
   (+)		(-)
   ICC sensor integrated unit connector	Terminal
   E61	1	Ground	Battery voltage

   Fig 1: Checking Voltage Between ICC Sensor Integrated Unit Harness Connector & Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO  3.

NG:

1. Repair or replace ICC sensor integrated unit power supply harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

1. Turn ignition switch OFF.
2. Check continuity between ICC sensor integrated unit harness connector and ground.
   TERMINALS CONTINUITY SPECIFICATION
   
   

   ICC sensor integrated unit connector	Terminal	Ground	Continuity
   E61	4		Yes

   Fig 2: Checking Continuity Between ICC Sensor Integrated Unit Harness Connector & Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK:

1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

NG:

1. Repair or replace ICC sensor integrated unit ground harness.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.