Nissan Maxima Service and Repair Manual: DTC/circuit diagnosis

  • C1101, C1102, C1103, C1104 wheel sensor
  • DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF DIAGNOSTIC RESULT With CONSULT. Start engine and drive vehicle at approximately 21 km/h (13 MPH) or more for approximately 5 minutes. Perform self diagnostic result. Diagnosis Procedure CAUTION: Do not check between wheel sensor terminals. 1.CONFIRM DTC With CONSULT Perform self-diagnostic result of ABS and record all active DTCs. Clear all DTCs. Perform DTC confirmation procedure. 2.INSPECT WHEEL SENSOR Inspect the suspect wheel sensor for damage or deformation. 3.HARNESS AND CONNECTOR INSPECTION Disconnect ABS actuator and electric unit (control unit) connector E26 and wheel sensor connector of suspect wheel.

  • C1105, C1106, C1107, C1108 wheel sensor
  • DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF DIAGNOSTIC RESULT With CONSULT. Start engine and drive vehicle at approximately 21 km/h (13 MPH) or more for approximately 5 minutes. Perform self diagnostic result Diagnosis Procedure CAUTION: Do not check between wheel sensor terminals. 1.CONFIRM DTC With CONSULT Perform self-diagnostic result of ABS and record all active DTCs. Clear all DTCs. Perform DTC confirmation procedure 2.CHECK TIRE PRESSURE AND TIRE WEAR Check tires for excessive wear and proper inflation 3.CHECK WHEEL SENSOR Check wheel sensor for the following: Proper installation Physical damage Contamination 4.

  • C1109 battery voltage [abnormal]
  • Description Supplies electric power to the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals. Reconnect connector and perform self-diagnosis 2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT AND GROUND CIRCUIT Turn ignition switch OFF.

  • C1110, C1153, C1170 ABS actuator and electric unit (control unit)
  • DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.REPLACE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CAUTION: Replace ABS actuator and electric unit (control unit) when self-diagnostic result shows items other than that applicable. Special Repair Requirement 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit).

  • C1111 pump motor
  • Description PUMP The pump returns the brake fluid stored in the reservoir to the master cylinder by reducing the pressure. MOTOR The motor drives the pump according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure Regarding Wiring Diagram information 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals.

  • C1114 main relay
  • Description Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals. Reconnect connector and perform self-diagnosis 2.CHECK SOLENOID AND ACTUATOR RELAY POWER SUPPLY CIRCUIT Turn ignition switch OFF.

  • C1115 ABS sensor [abnormal signal]
  • Description When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure CAUTION: Do not check between wheel sensor terminals. 1.CONNECTOR INSPECTION Disconnect ABS actuator and electric unit (control unit) connector and wheel sensor of malfunctioning code. Check terminals for deformation, disconnection, looseness or damage. 2.

  • C1116 stop lamp SW
  • Description The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Disconnect stop lamp switch connector and ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness or damage. 2.CHECK STOP LAMP SWITCH CIRCUIT Connect stop lamp switch connector. Check voltage between ABS actuator and electric unit (control unit) connector E26 terminal 20 and ground. 3.

  • C1120, C1122, C1124, C1126 in ABS sol
  • Description The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals. Reconnect connector and perform self-diagnosis 2.

  • C1121, C1123, C1125, C1127 out ABS sol
  • Description The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the signals transmitted by the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals. Reconnect connector and perform self-diagnosis. 2.

  • C1130, C1131, C1132, C1133, C1136 engine signal
  • Description ABS actuator and electric unit (control unit) and ECM exchange the engine signal with CAN communication line. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CHECK ENGINE SYSTEM Perform ECM self-diagnosis. Repair or replace items indicated, then perform ECM self-diagnosis again. Refer to EC-138, "CONSULT Function". Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to BRC-21, "CONSULT Function (ABS)".

  • C1142 press sen circuit
  • Description The pressure sensor converts the brake fluid pressure to an electric signal and transmits it to the ABS actuator and electric unit (control unit). (The pressure sensor is integrated in the ABS actuator and electric unit (control unit).) DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector and stop lamp switch connector. Check terminals for deformation, disconnection, looseness and damage. If any malfunction is found, repair or replace terminals. Reconnect connectors securely.

  • C1143, C1144 steering angle sensor
  • Description The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel, and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals. Reconnect connector and perform self-diagnosis 2.

  • C1145, C1146 yaw rate/side/decel G sensor
  • Description The yaw rate/side/decel G sensor detects the yaw rate/side/decel G affecting the vehicle, and transmits the data to the ABS actuator and electric unit (control unit) as an analog voltage signal. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure CAUTION:  Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC OFF switch "ON") may cause yaw rate/side/decel G sensor system to indicate a malfunction. However, this is not a malfunction if normal operation can be resumed after restarting engine. Then erase memory of self-diagnosis.

  • C1147, C1148, C1149, C1150 USV/HSV line
  • Description USV1, USV2 (CUT VALVE) The cut valve shuts off the normal brake fluid path from the master cylinder, when VDC/TCS is activated. HSV1, HSV2 (SUCTION VALVE) The suction valve supplies the brake fluid from the master cylinder to the pump, when VDC/TCS is activated. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results Diagnosis Procedure 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals.

  • C1154 PNP switch
  • Description The transmission range switch signal is transmitted to the ABS actuator and electric unit (control unit) using the CAN communication lines. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure 1.CHECK DATA MONITOR Select "SLCT LVR POSI" in "Data Monitor" and check transmission range switch signal. 2.CHECK TRANSMISSION RANGE SWITCH Perform transmission range switch inspection. Special Repair Requirement 1.

  • C1155 BR fluid level low
  • Description The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Diagnosis Procedure CAUTION: Check brake fluid level in brake reservoir tank before starting inspection. 1.CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect brake fluid level switch connector and combination meter connector. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals. Reconnect connector and perform self-diagnosis 2.

  • C1156 ST ANG sen com cir
  • Description The steering angle sensor is connected to the ABS actuator and electric unit (control unit) in addition to CAN lines. CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.

  • U1000 CAN comm circuit
  • Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.

  • Parking brake switch
  • Description The parking brake switch converts the status of the parking brake pedal to an electric signal and transmits it to the combination meter. The combination meter, through CAN communication, transmits the signal to the ABS actuator and electric unit (control unit). Component Function Check 1.CHECK PARKING BRAKE SWITCH OPERATION Operate the parking brake and check that the brake warning lamp in the combination meter turns on/off correctly. Diagnosis Procedure 1.CHECK PARKING BRAKE SWITCH CIRCUIT Disconnect combination meter connector and parking brake switch connector.

  • VDC off switch
  • Description VDC OFF switch deactivates (turn OFF) the VDC/TCS function when the VDC OFF switch is pressed. Component Function Check 1.CHECK VDC OFF SWITCH OPERATION Operate the VDC OFF switch and check that the VDC OFF indicator lamp in the combination meter turns on/ off correctly. Diagnosis Procedure 1.CHECK VDC OFF SWITCH Perform VDC OFF switch component inspection 2.CHECK VDC OFF SWITCH HARNESS Disconnect ABS actuator and electric unit (control unit) connector. Check continuity between ABS actuator and electric unit (control unit) connector E26 (A) terminal 21 and VDC OFF switch connector M72 (B) terminal 1.

  • ABS warning lamp
  • Description Component Function Check 1.CHECK ABS WARNING LAMP OPERATION Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON. Diagnosis Procedure 1.CHECK SELF-DIAGNOSIS Perform ABS actuator and electric unit (control unit) self-diagnosis. 2.CHECK COMBINATION METER Check if the indication and operation of combination meter are normal. Special Repair Requirement 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit).

  • Brake warning lamp
  • Description NOTE: 1: Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid level switch operation (when brake fluid is insufficient).  2: After starting engine, brake warning lamp is turned off. Component Function Check 1.BRAKE WARNING LAMP OPERATION CHECK 1 Check that the lamp illuminates after the ignition switch is turned ON, and turns OFF after the engine is started. 2.BRAKE WARNING LAMP OPERATION CHECK 2 Check that the brake warning lamp in the combination meter turns on/off correctly when operating the parking brake. Diagnosis Procedure 1.

  • VDC off indicator lamp
  • Description Component Function Check 1.VDC OFF INDICATOR LAMP OPERATION CHECK 1 Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON. 2.VDC OFF INDICATOR LAMP OPERATION CHECK 2 Check that the VDC OFF indicator lamp in the combination meter turns on/off correctly when operating the VDC OFF switch Diagnosis Procedure 1.CHECK VDC OFF SWITCH Check that the VDC OFF indicator lamp in the combination meter turns on/off correctly when operating the VDC OFF switch 2.CHECK SELF-DIAGNOSIS Perform ABS actuator and electric unit (control unit) self-diagnosis 3.CHECK COMBINATION METER Check if the indication and operation of combination meter are normal. 1.

  • Slip indicator lamp
  • Description Component Function Check 1.CHECK SLIP INDICATOR LAMP OPERATION Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON. Diagnosis Procedure 1.CHECK SELF-DIAGNOSIS Perform ABS actuator and electric unit (control unit) self-diagnosis 2.CHECK COMBINATION METER Check if the indication and operation of combination meter are normal Special Repair Requirement 1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit).

Diagnosis system [ABS actuator and electric unit (control unit)]

C1101, C1102, C1103, C1104 wheel sensor