LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2021 >> Terrain SLT, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Body Interior >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B3125, B3130, or B3135 >> Component Testing

Component Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector:
    • A23D Door Latch Assembly - Driver
    • A23P Door Latch Assembly - Passenger
    • A23LR Door Latch Assembly - Left Rear
    • A23RR Door Latch Assembly - Right Rear
  3. Connect a 25 A fused jumper wire between the test points:
    • A23D Door Latch Assembly - Driver: Control terminal 7 & B+
    • A23P Door Latch Assembly - Passenger: Control terminal 8 & B+
    • A23LR Door Latch Assembly - Left Rear: Control terminal 7 & B+
    • A23RR Door Latch Assembly - Right Rear: Control terminal 8 & B+
    4. CAUTION:

    Complete the testing as quickly as possible in order to prevent overheating and damaging the component.

  4. Momentarily connect a jumper wire between the test points:
    • A23D Door Latch Assembly - Driver: Control terminal 8 & Ground
    • A23P Door Latch Assembly - Passenger: Control terminal 9 & Ground
    • A23LR Door Latch Assembly - Left Rear: Control terminal 8 & Ground
    • A23RR Door Latch Assembly - Right Rear: Control terminal 9 & Ground
  5. Reverse the jumper wires 2 times between the terminals.

    Verify the component works as specified: A23 Door Latch Assembly = Lock & Unlock

    • If not the specified state 

      Replace the component: A23 Door Latch Assembly

    • Go to next step: If the specified state 
  6. All OK.
scientia non olet · About LEMON Manuals