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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Drive Mode System (INFINITI Drive Mode Selector) >> DTC/Circuit Diagnosis >> Drive Mode Select Switch Circuit >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK CONTINUITY DRIVE MODE SELECT SWITCH SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect the drive mode select switch connector and A/C auto amp. connector.
    3. Check continuity between drive mode select switch harness connector and A/C auto amp. harness connector.
      Drive mode select switch A/C auto amp. Continuity
      Connector Terminal Connector Terminal
      M203 1 M66 23 Existed
      2 24
      3 25
      4 26
    4. Check continuity between drive mode select switch harness connector and ground.
      Drive mode select switch Ground Continuity
      Connector Terminal
      M203 1 Not existed
      2
      3
      4

      Is the inspection result normal? 

      YES: GO TO 2

      NO: Repair harness or connector

  2. CHECK VOLTAGE OF A/C AUTO AMP. 
    1. Connect the A/C auto amp. connector.
    2. Check voltage between A/C auto amp. harness connector and ground.
      Terminals Voltage (Approx.)
      (+) (-)
      A/C auto amp. Ground
      Connector Terminal
      M66 23 12 V
      24
      25
      26

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Replace A/C auto amp.

  3. CHECK DRIVE MODE SELECT SWITCH GROUND CIRCUIT 
    1. Check continuity drive mode select switch harness connector and ground.
      Drive mode select switch Ground Continuity
      Connector Terminal
      M203 6 Existed

      Is the inspection result normal? 

      YES: Check drive mode select switch. Refer to "COMPONENT INSPECTION ".

      NO: Repair harness or connector.

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