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Circuit/System Testing

Test 1

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: S13D Door Lock Switch - Driver & S13P Door Lock Switch - Passenger
  3. Ignition - On/Vehicle - In Service Mode
  4. Verify the scan tool parameter: Driver Door Lock Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: X6 & X7 @ K9 Body Control Module
    3. Test for infinite resistance between the test points:
      • S13D Door Lock Switch - Driver: Signal circuit terminal 2 @ Component harness & Ground
      • S13D Door Lock Switch - Driver: Signal circuit terminal 4 @ Component harness & Ground
      • S13P Door Lock Switch - Passenger: Signal circuit terminal 2 @ Component harness & Ground
      • S13P Door Lock Switch - Passenger: Signal circuit terminal 4 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K9 Body Control Module
    • Go to next step: If the specified state 
  5. Ignition/Vehicle - Off
  6. Connect the electrical connector: S13D Door Lock Switch - Driver
  7. Ignition - On/Vehicle - In Service Mode
  8. Operate the component: S13D Door Lock Switch - Driver - Lock Switch & Unlock Switch

    Verify the scan tool parameter: Driver Door Lock Switch = Lock & Unlock

    • If not the specified state 

      Test or replace the component: S13D Door Lock Switch - Driver

    • Go to next step: If the specified state 
  9. Ignition/Vehicle - Off
  10. Connect the electrical connector: S13P Door Lock Switch - Passenger
  11. Ignition - On/Vehicle - In Service Mode
  12. Operate the component: S13P Door Lock Switch - Passenger - Lock Switch & Unlock Switch

    Verify the scan tool parameter: Passenger Door Lock Switch = Lock & Unlock

    • If not the specified state 

      Test or replace the component: S13P Door Lock Switch - Passenger

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

Test 2

    NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector:
    • S13D Door Lock Switch - Driver
    • S13P Door Lock Switch - Passenger
  3. Test for less than 10 ohms between the test points: Ground circuit terminal 3 & Ground
    • If 10 ohms or greater 
    1. Ground Connection - Disconnect
    2. Test for less than 2 ohms between the test points: Ground circuit terminal 3 @ Component harness & Ground Connection
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  4. Ignition - On/Vehicle - In Service Mode
  5. Connect a 3 A fused jumper wire between the test points: Signal circuit terminal 4 & Ground circuit terminal 3
  6. Verify the scan tool parameter: Driver Door Lock Switch = Lock
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector: X6 @ K9 Body Control Module
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 4 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points: Signal circuit terminal 4 @ Component harness & Terminal 16 X6 @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • Go to next step: If the specified state 
  7. Connect a 3 A fused jumper wire between the test points: Signal circuit terminal 2 & Ground circuit terminal 3
  8. Verify the scan tool parameter: Driver Door Lock Switch = Unlock
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector: X7 @ K9 Body Control Module
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 2 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points: Signal circuit terminal 2 @ Component harness & Terminal 14 X7 @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • Go to next step: If the specified state 
  9. Test or replace the component: S13D Door Lock Switch - Driver/S13P Door Lock Switch - Passenger

Test 3

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: M14D Door Lock Actuator - Driver
  3. Connect a test lamp between the test points: Control circuit terminal A & Control circuit terminal B
  4. Ignition - On/Vehicle - In Service Mode
  5. Operate the component: S13D Door Lock Switch - Driver - Lock Switch & Unlock Switch

    Verify the test lamp does not turn On and Off.

    • If the test lamp turns On and Off 

      Test or replace the component: M14D Door Lock Actuator - Driver

    • Go to next step: If the test lamp does not turn On and Off 
  6. Ignition/Vehicle - Off
  7. Disconnect the electrical connector: X6 @ K9 Body Control Module
  8. Test for less than 2 ohms between the test points:
    • Control circuit terminal A @ Component harness & Terminal 4 X6 @ Control module harness
    • Control circuit terminal B @ Component harness & Terminal 1 X6 @ Control module harness
    • If 2 ohms or greater 

      Repair the open/high resistance in the circuit.

    • Go to next step: If less than 2 ohms 
  9. Test or replace the component: K9 Body Control Module

Test 4

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector:
    • M14LR Door Lock Actuator - Left Rear
    • M14P Door Lock Actuator - Passenger
    • M14RR Door Lock Actuator - Right Rear
  3. Connect a test lamp between the test points: Control circuit terminal A & Control circuit terminal B
  4. Ignition - On/Vehicle - In Service Mode
  5. Operate the component: S13D Door Lock Switch - Driver - Lock Switch & Unlock Switch

    Verify the test lamp does not turn On and Off.

    • If the test lamp turns On and Off 

      Test or replace the component: M14 Door Lock Actuator

    • Go to next step: If the test lamp does not turn On and Off 
  6. Ignition/Vehicle - Off
  7. Disconnect the electrical connector: X6 @ K9 Body Control Module
  8. Ignition - On/Vehicle - In Service Mode
  9. Test for less than 2 ohms between the test points:
    • Control circuit terminal A @ Component harness & Terminal 4 X6 @ Control module harness
    • Control circuit terminal B @ Component harness & Terminal 2 X6 @ Control module harness
    • If 2 ohms or greater 

      Repair the open/high resistance in the circuit.

    • Go to next step: If less than 2 ohms 
  10. Test or replace the component: K9 Body Control Module

Test 5

    NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: X2 & X6 @ K9 Body Control Module
  3. Test for less than 10 ohms between the test points: Ground circuit terminal 3 X6 & Ground
    • If 10 ohms or greater 
    1. Ground Connection - Disconnect
    2. Test for less than 2 ohms between the test points: Ground circuit terminal 3 X6 & Ground Connection
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  4. Ignition - On/Vehicle - In Service Mode
  5. Verify a test lamp turns On between the test points: B+ circuit terminal 4 X2 & Ground
    • If the test lamp does not turn On and the circuit fuse is OK 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Test for less than 2 ohms between the test points: B+ circuit terminal 4 X2 & Output terminal @ Fuse
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
    • If the test lamp does not turn On and the circuit fuse is open 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector:
      • M14D Door Lock Actuator - Driver
      • M14LR Door Lock Actuator - Left Rear
      • M14P Door Lock Actuator - Passenger
      • M14RR Door Lock Actuator - Right Rear
    3. Test for infinite resistance between the test points:
      • Control circuit terminal 1 X6 @ K9 Body Control Module & Ground
      • Control circuit terminal 2 X6 @ K9 Body Control Module & Ground
      • Control circuit terminal 4 X6 @ K9 Body Control Module & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: M14 Door Lock Actuator
    • Go to next step: If the test lamp turns On 
  6. Ignition/Vehicle - Off
  7. Connect the electrical connector: X2 @ K9 Body Control Module
  8. Ignition - On/Vehicle - In Service Mode
  9. Test for less than 1 V between the test points:
    • Control circuit terminal 1 X6 @ K9 Body Control Module & Ground
    • Control circuit terminal 2 X6 @ K9 Body Control Module & Ground
    • Control circuit terminal 4 X6 @ K9 Body Control Module & Ground
    • If greater than 1 V 

      Repair the short to voltage on the circuit.

    • Go to next step: If 1 V or less 
  10. Ignition/Vehicle - Off
  11. Test for infinite resistance between the test points:
    • Control circuit terminal 1 X6 @ K9 Body Control Module & Ground
    • Control circuit terminal 2 X6 @ K9 Body Control Module & Ground
    • Control circuit terminal 4 X6 @ K9 Body Control Module & Ground
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • Go to next step: If infinite resistance 
  12. Replace the component: K9 Body Control Module
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