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 electrical connector: S13D Door Lock Switch - Driver
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 Switch = Inactive
   • If not the specified state 
   1. Ignition/Vehicle - Off
   2. Disconnect the electrical connector: X2 @ 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 Switch = Lock
   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
   2. Disconnect the electrical connector: X2 @ 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 19 X2 @ 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 Switch = Unlock
   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
   2. Disconnect the electrical connector: X2 @ 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 @ Component harness & Terminal 15 X2 @ 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

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 electrical connector: 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: Passenger Door Lock Switch = Inactive
   • If not the specified state 
   1. Ignition/Vehicle - Off
   2. Disconnect the electrical connector: 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: Passenger Door Lock Switch = Lock
   • 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 
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: Passenger 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 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 @ Component harness & Terminal 24 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: S13P Door Lock Switch - Passenger

Test 3

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 - Unlock Switch & Lock Switch - Pressed

   Verify the test lamp state:

   S13D Door Lock Switch - Driver - Not Used = Test lamp Off

   Lock Switch - Pressed = Test lamp On

   Unlock Switch - Pressed = Test lamp On

   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Disconnect the electrical connector: K9 Body Control Module
   3. Ignition - On/Vehicle - In Service Mode
   4. Test for less than 1 V between the test points:
      • Control circuit terminal 7 @ Component harness & Ground
      • Control circuit terminal 8 @ 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 infinite resistance between the test points:
      • Control circuit terminal 7 @ Component harness & Ground
      • Control circuit terminal 8 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
   7. 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.
        • If less than 2 ohms - Replace the component: K9 Body Control Module
   • Go to next step: If the specified state 
6. Test or replace the component: A23D Door Latch Assembly - Driver

Test 4

1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: A23LR Door Latch Assembly - Left Rear
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 - Unlock Switch & Lock Switch - Pressed

   Verify the test lamp state:

   S13D Door Lock Switch - Driver - Not Used = Test lamp Off

   Lock Switch - Pressed = Test lamp On

   Unlock Switch - Pressed = Test lamp On

   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Disconnect the electrical connector: K9 Body Control Module
   3. Ignition - On/Vehicle - In Service Mode
   4. Test for less than 1 V between the test points:
      • Control circuit terminal 7 @ Component harness & Ground
      • Control circuit terminal 8 @ 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 infinite resistance between the test points:
      • Control circuit terminal 7 @ Component harness & Ground
      • Control circuit terminal 8 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
   7. Test for less than 2 ohms between the test points:
      • Control circuit terminal 7 @ Component harness & Terminal 2 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.
        • If less than 2 ohms - Replace the component: K9 Body Control Module
   • Go to next step: If the specified state 
6. Test or replace the component: A23LR Door Latch Assembly - Left Rear

Test 5

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 - Unlock Switch & Lock Switch - Pressed

   Verify the test lamp state:

   S13D Door Lock Switch - Driver - Not Used = Test lamp Off

   Lock Switch - Pressed = Test lamp On

   Unlock Switch - Pressed = Test lamp On

   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Disconnect the electrical connector: K9 Body Control Module
   3. Ignition - On/Vehicle - In Service Mode
   4. Test for less than 1 V between the test points:
      • Control circuit terminal 8 @ Component harness & Ground
      • Control circuit terminal 9 @ 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 infinite resistance between the test points:
      • Control circuit terminal 8 @ Component harness & Ground
      • Control circuit terminal 9 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
   7. 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.
        • If less than 2 ohms - Replace the component: K9 Body Control Module
   • Go to next step: If the specified state 
6. Test or replace the component: A23P Door Latch Assembly - Passenger

Test 6

1. Ignition/Vehicle & All vehicle systems - Off
2. Disconnect the electrical connector: A23RR Door Latch Assembly - Right Rear
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 - Unlock Switch & Lock Switch - Pressed

   Verify the test lamp state:

   S13D Door Lock Switch - Driver - Not Used = Test lamp Off

   Lock Switch - Pressed = Test lamp On

   Unlock Switch - Pressed = Test lamp On

   • If not the specified state 
   1. Ignition/Vehicle - Off & Remove - Test lamp
   2. Disconnect the electrical connector: K9 Body Control Module
   3. Ignition - On/Vehicle - In Service Mode
   4. Test for less than 1 V between the test points:
      • Control circuit terminal 8 @ Component harness & Ground
      • Control circuit terminal 9 @ 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 infinite resistance between the test points:
      • Control circuit terminal 8 @ Component harness & Ground
      • Control circuit terminal 9 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
   7. 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.
        • If less than 2 ohms - Replace the component: K9 Body Control Module
   • Go to next step: If the specified state 
6. Test or replace the component: A23RR Door Latch Assembly - Right Rear

Test 7

1. Ignition/Vehicle - Off
2. Disconnect the electrical connector:
   • A23D Door Latch Assembly - Driver
   • A23LR Door Latch Assembly - Left Rear
3. Ignition - On/Vehicle - In Service Mode
4. Verify a test lamp does not turn On between the test points:
   • A23D Door Latch Assembly - Driver Control terminal 8 & Ground
   • A23D Door Latch Assembly - Driver Control terminal 7 & Ground
   • A23LR Door Latch Assembly - Left Rear Control terminal 7 & Ground
   • If the test lamp turns On

     Repair the short to voltage on the circuit.

   • Go to next step: If the test lamp does not turn On
5. Ignition/Vehicle - Off
6. Disconnect the electrical connector: X6 @ K9 Body Control Module
7. Test for less than 2 ohms between the test points: Control terminal 8 @ A23D Door Latch Assembly - Driver & Control circuit terminal 4 X6 @ K9 Body Control Module
   • If 2 ohms or greater - Repair the open/high resistance in the circuit.
   • Go to next step: If less than the specified range 
8. 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 
9. Verify the fuse is not open: F38DA Fuse
   • If the fuse is open 
   1. Disconnect the electrical connector: X2 @ K9 Body Control Module
   2. Test for infinite resistance between the test points: B+ circuit terminal 4 X2 & Output terminal @ Fuse
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
   • Go to next step: If the fuse is not open
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.

10. Ignition/Vehicle & All vehicle systems - Off
11. 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 
12. Replace the component: K9 Body Control Module