Power Tailgate Control Unit Input Test

1. Remove these items: Center pillar upper trim Quarter pillar trim Roof end trim Grab handle Headliner is lowered. Disconnect connector A (26P) and connector B (5P) (A) from the power tailgate control unit (B). Inspect the connectors and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to Step 4 . With the connector still disconnected, make these input tests at the connectors. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to Step 5 .
   Cavity | Wire | Test condition | Test: desired result | Possible cause if result is not obtained
   --- | --- | --- | --- | ---
   A1 | WHT/RED | Under all conditions | Check for voltage to ground: There should be battery voltage. | Blown No. 7 (10 A) fuse in the under-dash fuse/relay box An open in the wire
   A2 | YEL | Ignition switch ON (II) | Check for voltage to ground: There should be battery voltage. | Blown No. 21 (7.5 A) fuse in the under-dash fuse/relay box An open in the wire
   B2 | WHT/GRN | Under all conditions | Check for voltage to ground: There should be battery voltage. | Blown No. 42 (40 A) fuse in the under-hood subfuse box An open in the wire
   B1 | WHT/YEL | Under all conditions | Check for voltage to ground: There should be battery voltage. | Blown No. 41 (20 A) fuse in the under-hood subfuse box An open in the wire
   A24 | YEL/BLK | Under all conditions | Attach to ground: Power tailgate indicator light should come on. | Blown No. 7 (10 A) fuse in the under-dash fuse/relay box Faulty gauge control module An open in the wire
   A15 | BLK | Under all conditions | Check for continuity to ground: There should be continuity. | Poor ground (G705) An open in the wire
   B3 | BLK | Under all conditions | Check for continuity to ground: There should be continuity. | Poor ground (G705) An open in the wire
   B5 | BLK | Under all conditions | Check for continuity to ground: There should be continuity. | Poor ground (G705) An open in the wire
1. Reconnect connectors A (26P) and B (5P) to the power tailgate control unit, and perform the following input taste. If any test indicates a problem, find and correct the cause, then recheck the system. If all input tests prove OK, the control unit must be faulty, replace the power tailgate control unit.
   Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained
   --- | --- | --- | --- | ---
   A3 | BRN | The buzzer is activated by using a HDS. | Power tailgate buzzer should come on. | Faulty tailgate buzzer Poor ground (G705) An open in the wire
   A8 | BLU/BLK | A/T gear position in P | Check for continuity to ground : There should be continuity. | Faulty transmission range switch Poor ground (G101) An open in the wire
   A21 | GRN/RED | Under all conditions | Check for continuity between the A21 terminal and the No. 1 terminal of the under-dash fuse/relay box connector G (6P): There should be continuity. | An open in the wire
   B4 | BLU/GRN | Under all conditions | Check for continuity between the B4 terminal and the No. 2 terminal of the power tailgate inspection connector: There should be continuity. | An open in the wire