7. Warning Lamp Stays On When Ignition Switch Is Turned On

WARNING: This page is about a different car, the 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION START
ABS control unit inspection

Fig 1: ABS Control Unit Inspection
Courtesy of NISSAN MOTOR CO., U.S.A.
1. GO TO 2.
CHECK FUSE
Check 7.5A fuse No. 7. For fuse layout, refer to FUSES & CIRCUIT BREAKERS .

Is fuse OK?
1. Yes: GO TO 3.
2. No: GO TO 8 .
CHECK HARNESS CONNECTOR
Check ABS actuator and electric unit pin terminals for damage or bad connection of ABS actuator and electric unit harness connector. Reconnect ABS actuator and electric unit harness connector. Then retest.

Does warning lamp stay on when ignition switch is turned ON?
1. Yes: GO TO 4.
2. No: INSPECTION END
CHECK ABS ACTUATOR AND ELECTRIC UNIT GROUND CIRCUIT
Refer to "ABS ACTUATOR AND ELECTRIC UNIT GROUND" in "GROUND CIRCUIT CHECK ".

Is ground circuit OK?
1. Yes: GO TO 5.
2. No: Repair harness or connector.
CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector E111 (body side) terminal 17 and ground.
  
  Fig 2: Checking ABS Actuator And Electric Unit Power Supply Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
Does battery voltage exist when ignition switch is turned ON?
1. Yes: GO TO 6.
2. No: Check the following.
  If NG, repair harness or connector.
  - Harness connector E111
  - Harness for open or short between ABS actuator and electric unit and fuse
CHECK WARNING LAMP
1. Disconnect ABS actuator and electric unit connector.
2. Connect suitable wire between ABS actuator and electric unit connector E111 (body side) terminal 2 and ground.
  
  Fig 3: Checking Warning Lamp
  Courtesy of NISSAN MOTOR CO., U.S.A.
Does the warning lamp deactivate?
1. Yes: Replace ABS actuator and electric unit.
2. No: GO TO 7.
CHECK ABS WARNING LAMP CONTROL CIRCUIT FOR OPEN
1. Disconnect combination meter connector M24.
2. Check continuity between combination meter connector M24 (body side) terminal 10 and ABS actuator and electric unit connector E111 (body side) terminal 2.
  NOTE: Connect positive lead of multimeter to 1 combination meter connector M24 (body side) terminal 10 and negative lead to ABS actuator and electric unit connector E111 (body side) terminal 2.
  
  Fig 4: Checking ABS Warning Lamp Control Circuit For Open
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Continuity should exist.
Does continuity exist?
1. Yes: Check combination meter.
  Refer to "WARNING LAMPS ".
2. No: Repair harness or connectors.
REPLACE FUSE
Replace fuse.

Does the fuse blow out when ignition switch is turned ON?
1. Yes: GO TO 9.
2. No: INSPECTION END
CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT FOR SHORT
1. Disconnect battery cable and ABS actuator and electric unit connector.
2. Check continuity between ABS actuator and electric unit connector E111 (body side) terminal 17 and ground.
  
  Fig 5: Checking ABS Actuator And Electric Unit Power Supply Circuit For Short
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Continuity should not exist.
Does continuity exist?
1. Yes: Check the following.
  If NG, repair harness or connector.
  - Harness connector E111
  - Harness for open or short between ABS actuator and electric unit and fuse
2. No: Replace ABS actuator and electric unit.