Circuit/System Testing

Test 1

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 4 & Ground
   • If 10 ohms or greater 
   1. Ground Connection - Disconnect
   2. Test for less than 2 ohms between the test points: Ground circuit terminal 4@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. Verify the scan tool parameter: Driver Door Lock SwitchorPassenger Door Lock Switch = Inactive
   • If not the specified state 
   1. Ignition/Vehicle - Off
   2. Disconnect the electrical connector: X2/X7@K9 Body Control Module
   3. Test for infinite resistance between the test points:
      • Signal circuit terminal 2@Component harness & Ground
      • Signal circuit terminal 3@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 
6. Connect a 3 A fused jumper wire between the test points: Signal circuit terminal 2 & Ground circuit terminal 4
7. Verify the scan tool parameter: Driver Door Lock SwitchorPassenger Door Lock Switch = Lock
   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Jumper wire (s)
   2. Disconnect the electrical connector: X2orX7@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@S13D Door Lock Switch - Driver & Terminal 19 X2@Control module harness
      • Signal circuit terminal 2@S13P Door Lock Switch - Passenger & 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 
8. Connect a 3 A fused jumper wire between the test points: Signal circuit terminal 3 & Ground circuit terminal 4
9. Verify the scan tool parameter: Driver Door Lock SwitchorPassenger Door Lock Switch = Unlock
   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Jumper wire (s)
   2. Disconnect the electrical connector: X2orX7@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 3@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 3@S13D Door Lock Switch - Driver & Terminal 15 X2@Control module harness
      • Signal circuit terminal 3@S13P Door Lock Switch - Passenger & Terminal 25 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 
10. Test or replace the component: S13D Door Lock Switch - Driver/S13P Door Lock Switch - Passenger

Test 2

1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: A23D Door Latch Assembly - Driver
3. Connect a test lamp between the test points: Control circuit terminal 7 & Control circuit terminal 8
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: A23D Door Latch Assembly - 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 7@Component harness & Terminal 1 X6@Control module harness
   • Control circuit terminal 8@Component harness & Terminal 4 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 3

1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: A23P Door Latch Assembly - Passenger
3. Connect a test lamp between the test points: Control circuit terminal 8 & Control circuit terminal 9
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: A23P Door Latch Assembly - Passenger

   • 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 8@Component harness & Terminal 4 X6@Control module harness
   • Control circuit terminal 9@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 4

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:
      • A23D Door Latch Assembly - Driver
      • A23P Door Latch Assembly - Passenger
   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: A23 Door Latch Assembly
   • 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