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Circuit/System Testing

Test 1

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S13D Door Lock Switch - Driver
  3. Ignition - On / Vehicle - In Service Mode
  4. Verify a test lamp turns On between the test points: Control circuit terminal 5 & Ground
    • If the test lamp does not turn On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X1 @ K9 Body Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 5 X1 @ Control module harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    4. Test for less than 2 Ω between the test points: Control circuit terminal 5 @ Component harness & Control circuit terminal 5 X1 @ Control module harness
      • If 2 Ω or greater - Repair the open/high resistance in the circuit.
      • If less than 2 Ω - Refer to DTC B2625
    • Go to next step: If the test lamp is ON 
  5. Connect a test lamp between the test points: Control circuit terminal 6 & B+
  6. Ignition - On / Vehicle - In Service Mode
  7. Perform the scan tool control function: All Doors Lock/Unlock - Driver Door Unlock Command & All Doors Lock Command

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: A23D Door Latch Assembly - Driver
    3. Test for less than 2 Ω between the test points: Control circuit terminal 6 @ Component harness & Control circuit terminal 4 @ A23D Door Latch Assembly - Driver
      • If 2 Ω or greater - Repair the open/high resistance in the circuit.
      • If less than 2 Ω - Replace the component: A23D Door Latch Assembly - Driver
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: A23D Door Latch Assembly - Driver
    3. Test for infinite resistance between the test points: Control circuit terminal 6 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: A23D Door Latch Assembly - Driver
    • Go to next step: If the test lamp turns On and Off 
  8. Test or replace the component: S13D Door Lock Switch - Driver

Test 2

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S13P Door Lock Switch - Passenger
  3. Ignition - On / Vehicle - In Service Mode
  4. Verify a test lamp turns On between the test points: Control circuit terminal 5 & Ground
    • If the test lamp does not turn On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X1 @ K9 Body Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 5 X1 @ Control module harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    4. Test for less than 2 Ω between the test points: Control circuit terminal 5 @ Component harness & Control circuit terminal 5 X1 @ Control module harness
      • If 2 Ω or greater - Repair the open/high resistance in the circuit.
      • If less than 2 Ω - Refer to DTC B2625
    • Go to next step: If the test lamp is ON 
  5. Connect a test lamp between the test points: Control circuit terminal 6 & B+
  6. Ignition - On / Vehicle - In Service Mode
  7. Perform the scan tool control function: All Doors Lock/Unlock - Passenger Door(s) Unlock Command & All Doors Lock Command

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: A23P Door Latch Assembly - Passenger
    3. Test for less than 2 Ω between the test points: Control circuit terminal 6 @ Component harness & Control circuit terminal 2 @ A23P Door Latch Assembly - Passenger
      • If 2 Ω or greater - Repair the open/high resistance in the circuit.
      • If less than 2 Ω - Replace the component: A23P Door Latch Assembly - Passenger
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: A23P Door Latch Assembly - Passenger
    3. Test for infinite resistance between the test points: Control circuit terminal 6 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: A23P Door Latch Assembly - Passenger
    • Go to next step: If the test lamp turns On and Off 
  8. Test or replace the component: S13P Door Lock Switch - Passenger
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