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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Vehicle Access - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> Power Door Locks Malfunction >> Component Testing

Component Testing

S13 Door Lock Switch - Test

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector: S13 Door Lock Switch
  3. Test for infinite resistance between the test points:
    • Signal terminal 2 & Ground terminal 4 - Lock Switch - Not Pressed
    • Signal terminal 3 & Ground terminal 4 - Unlock Switch - Not Pressed
    • If less than infinite resistance 

      Replace the component: S13 Door Lock Switch

    • Go to next step: If infinite resistance 
  4. Test for less than 3 ohms between the test points: Signal terminal 2 & Ground terminal 4 - Lock Switch - Pressed
    • If 3 ohms or greater 

      Replace the component: S13 Door Lock Switch

    • Go to next step: If less than 3 ohms 
  5. Test for less than 3 ohms between the test points: Signal terminal 3 & Ground terminal 4 - Unlock Switch - Pressed
    • If 3 ohms or greater 

      Replace the component: S13 Door Lock Switch

    • Go to next step: If less than 3 ohms 
  6. All OK.

A23 Door Latch Assembly

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector:
    • A23D Front Side Door Latch-Driver
    • A23P Front Side Door Latch-Passenger
    • A23LR Rear Side Door Latch-Left
    • A23RR Rear Side Door Latch-Right
  3. Connect a 25 A fused jumper wire between the test points:
    • A23D Front Side Door Latch-Driver: Control terminal 4 & B+
    • A23P Front Side Door Latch-Passenger: Control terminal 1 & B+
    • A23LR Rear Side Door Latch-Left: Control terminal 4 & B+
    • A23RR Rear Side Door Latch-Right: Control terminal 1 & 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 Front Side Door Latch-Driver: Control terminal 7 & Ground
    • A23P Front Side Door Latch-Passenger: Control terminal 5 & Ground
    • A23LR Rear Side Door Latch-Left: Control terminal 5 & Ground
    • A23RR Rear Side Door Latch-Right: Control terminal 2 & Ground
  5. Reverse the jumper wires 2 times between the terminals.

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

    • If not the specified state 

      Replace the component: A23 Side Door Latch

    • Go to next step: If the specified state 
  6. All OK.
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