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Home › Infiniti › 2008 › EX35 Base, AWD › Repair and Diagnosis › Transmission › Automatic Transmission › Component Diagnosis › Shift Lock System › Diagnosis Procedure

Diagnosis Procedure

  1. CHECK A/T POSITION

    Check A/T position. Refer to "2WD : INSPECTION AND ADJUSTMENT " (2WD), "AWD : INSPECTION AND ADJUSTMENT " (AWD).

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Adjust A/T position. Refer to "2WD : INSPECTION AND ADJUSTMENT " (2WD), "AWD : INSPECTION AND ADJUSTMENT " (AWD).

  2. CHECK POWER SOURCE
    1. Turn ignition switch OFF.
    2. Disconnect shift lock relay.
    3. Check voltage between shift lock relay vehicle side harness connector terminal and ground.
      VOLTAGE CHART

      Shift lock relay vehicle side harness connector Ground Condition Voltage (Approx.)
      Connector Terminal
      E52 2 Depressed brake pedal. Battery voltage
      Released brake pedal. 0 V

    Is the inspection result normal? 

    YES: GO TO  7.

    NO-1: When depressing the brake pedal, the voltage is 0 V: GO TO 3.

    NO-2: When releasing the brake pedal, the voltage is battery voltage: GO TO  5.

  3. CHECK POWER SOURCE
    1. Disconnect stop lamp switch connector.
    2. Check voltage between stop lamp switch vehicle side harness connector terminal and ground.
      VOLTAGE CHART

      Stop lamp switch vehicle side harness connector Ground Voltage (Approx.)
      Connector Terminal
      E110 3 Battery voltage

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Check the following. If NG, repair or replace damaged parts.

    • 10 A fuse [No. 7, located in the fuse block (J/B)]
    • Harness for short to ground or open between battery and stop lamp switch vehicle side harness connector terminal 3.
    • Harness for short to ground or open between battery and stop lamp switch vehicle side harness connector terminal 1.
    • Harness for short to ground between battery and ICC brake hold relay vehicle side harness connector terminal 3. (With ICC)
  4. CHECK STOP LAMP SWITCH

    Check stop lamp switch. Refer to "COMPONENT INSPECTION (STOP LAMP SWITCH) ".

    Is the inspection result normal? 

    YES: Check the following. If NG, repair or replace damaged parts.

    • Harness for short to ground or open between stop lamp switch vehicle side harness connector terminal 4 and shift lock relay vehicle side harness connector terminal 2.
    • Harness for short to ground between stop lamp switch vehicle side harness connector terminal 4 and ICC brake hold relay vehicle side harness connector terminal 5. (With ICC)

    NO: Repair or replace damaged parts.

  5. CHECK STOP LAMP SWITCH

    Check stop lamp switch. Refer to "COMPONENT INSPECTION (STOP LAMP SWITCH) ".

    Is the inspection result normal? 

    YES-1: Without ICC: Repair or replace harness between stop lamp switch and shift lock relay.

    YES-2: With ICC: GO TO 6.

    NO: Repair or replace damaged parts.

  6. CHECK DTC WITH ICC

    With CONSULT-III 

    Select "Self Diagnostic Results" mode for "ICC". Refer to "CONSULT-III FUNCTION (ICC) ".

    Is any malfunction detected? 

    YES: Check the DTC detected item. Refer to "CONSULT-III FUNCTION (ICC) ".

    NO: Repair or replace harness between stop lamp switch and shift lock relay.

  7. CHECK GROUND CIRCUIT

    Check continuity between shift lock relay vehicle side harness connector terminal and ground.

    CONTINUITY CHART

    Shift lock relay vehicle side harness connector Ground Continuity
    Connector Terminal
    E52 1 Existed

    Is the inspection result normal? 

    YES: GO TO 8.

    NO: Repair or replace damaged parts.

  8. CHECK SHIFT LOCK RELAY

    Check shift lock relay. Refer to "COMPONENT INSPECTION (SHIFT LOCK RELAY) ".

    Is the inspection result normal? 

    YES: GO TO 9.

    NO: Repair or replace damaged parts.

  9. CHECK POWER SOURCE
    1. Turn ignition switch ON.
    2. Check voltage between shift lock relay vehicle side harness connector terminal and ground.
      VOLTAGE CHART

      Shift lock relay vehicle side harness connector Ground Voltage (Approx.)
      Connector Terminal
      E52 5 Battery voltage

    Is the inspection result normal? 

    YES: GO TO 10.

    NO: Check the following. If NG, repair or replace damaged parts.

    • 10 A fuse [No. 3, located in the fuse block (J/B)]
    • Harness for short to ground or open between ignition switch and shift lock relay vehicle side harness connector terminal 5
  10. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect control device connector.
    3. Check continuity between control device vehicle side harness connector terminal and ground.
      CONTINUITY CHART

      Control device vehicle side harness connector Ground Continuity
      Connector Terminal
      M137 4 Existed

    Is the inspection result normal? 

    YES: GO TO 11.

    NO: Repair or replace damaged parts.

  11. CHECK SHIFT LOCK SOLENOID

    Check shift lock solenoid. Refer to "COMPONENT INSPECTION (SHIFT LOCK SOLENOID) ".

    Is the inspection result normal? 

    YES: Check the following. If NG, repair or replace damaged parts.

    • Harness for short to ground, short to power or open between shift lock relay vehicle side harness connector terminal 3 and control device vehicle side harness connector terminal 8
    • Harness for short to ground, short to power or open between control device harness conductor terminal 8 and shift lock unit harness connector terminal 3
    • Harness for open between control device harness conductor terminal 4 and shift lock unit harness connector terminal 4

    NO: Repair or replace damaged parts.

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