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:M69 Sunroof Motor
3. Test for less than 10 ohms between the test points:Ground circuit terminal 4 & Ground
   • If 10 ohms or greater 
   1. Test for less than 2 ohms between the test points:Ground terminal & 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. Verify a test lamp turns On between the test points:B+ circuit terminal 1 & 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 1 & Output terminal @
      • 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. Test for infinite resistance between the test points:B+ circuit terminal 1 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance
   3. Test for infinite resistance between the test points:B+ circuit terminal 1 & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the appropriate component:M69 Sunroof Motor
   • Go to next step: If the test lamp turns On 
5. Ignition/Vehicle & All vehicle systems - Off
6. Connect the electrical connector:M69 Sunroof Motor
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.

7. Disconnect the electrical connector:A98 Front Overhead Console Assembly
8. Test for less than 10 ohms between the test points:Low Reference circuit terminal 20 & Ground
   • If 10 ohms or greater 
   1. Disconnect the electrical connector:M69 Sunroof Motor
   2. Test for less than 2 ohms between the test points:Low Reference circuit terminal@Component harness & Low Reference circuit terminal@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:M69 Sunroof Motor
   • Go to next step: If less than 10 ohms 
9. Ignition - On / Vehicle - In Service Mode
10. Test for 4.5 to 5.5 V between the test points:Signal circuit terminal 9 & Ground
    • If less than 4.5 V 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector:M69 Sunroof Motor
    3. Test for infinite resistance between the test points:Signal circuit terminal @Component 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 ohms between the test points:Signal circuit terminal@Component harness & The other end of the circuit@Control module harness
       • If 2 ohms or greater - Repair the open/high resistance in the circuit.
       • If less than 2 ohms - Replace the component:M69 Sunroof Motor
    • If greater than 5.5 V 
    1. Ignition/Vehicle & All vehicle systems - Off
    2. Disconnect the electrical connector:M69 Sunroof Motor
    3. Test for less than 1 V between the test points:Signal circuit terminal@Component harness & Ground
       • If 1 V or greater - Repair the short to voltage on the circuit.
       • If less than 1 V - Replace the component:M69 Sunroof Motor

• Go to next step: If between 4.5 and 5.5 V 

Test or replace the component:A98 Front Overhead Console Assembly