Power Sliding Door Unlatch Actuator Inoperative
Circuit Description
The power sliding door (PSD) uses a power sliding door unlatch actuator to unlatch or unlatch (open) the sliding door. The rear side door actuator control module operates the power sliding door unlatch actuator.
When the PSD opens the sliding door, the rear side door actuator control module energizes the power sliding door unlatch actuator by sending B+ through CKT 2910. The power sliding door unlatch actuator receives ground through CKT 750. The sliding door unlatches when the power sliding door unlatch is energized. CKT 750 and CKT 2910 pass through the switch plate plungers and the pads located on the B-pillar; therefore, the rear side door actuator control module is only able to energize the power sliding door lock unlatch actuator when the switch plate plungers and pads are in contact. The power sliding door unlatch actuator is located inside the upper center of the sliding door.
Diagnostic Aids
| • | The unlatch actuator may not activate due to the following conditions: |
| - | An open circuit (CKT 750 and/or CKT 2910) |
| - | A defective unlatch actuator |
| • | The unlatch actuator and the rod may not unlatch or open the door due to the following conditions: |
| - | The sliding door is locked; therefore, unlock the door |
| - | The front rod adjustment is too long; therefore adjust the front rod. Refer to Sliding Door Lock Rod Adjustment |
| - | A defective unlatch actuator |
| • | Inspect the unlatch actuator for the power sliding door for the following conditions: |
| - | Poor connector terminal contact at the control module of the rear side door actuator |
| - | The switch plate plungers and the pads for good interface |
| - | An open in CKT 2910 |
| - | An open in CKT 750 |
| - | A poor G302 |
| - | A short to the ground in CKT 2910 |
| - | A faulty unlatch actuator for the power sliding door |
| • | The Diagnostic Mode 3 tests the unlatch actuator for the power sliding door. Refer to Diagnostic Modes in Power Sliding Door (PSD) Diagnostic Information for procedures. |
| • | An intermittent failure may be difficult to detect and to diagnose accurately. Faulty electrical connections or wiring cause the most intermittent conditions. |
| Inspect the suspected circuits for the following conditions when an intermittent condition is suspected: |
| - | Poor mating of the connector halves or the backed out terminals |
| - | Improperly formed or improperly damaged terminals |
| - | Wire chafing |
| - | Poor wire to terminal connections |
| - | Dirty or corroded terminals |
| - | Damage to the connector bodies |
| - | Wire broken inside of the insulation |
| • | Use a J 35616 whenever a diagnostic procedure requests probing or inspecting of a terminal. Using this tool will ensure that no damage to the terminal will occur and will give an idea of the amount of terminal tension contact that is sufficient. |
Important: Circuits 294 and 1892 have been changed around in the door and pillar mounted RH door lock switch plate connectors to improve circuit operation. This was an on-going change through production. It is possible to have two different terminal configurations going into the door and pillar mounted RH door lock switch plate connectors. The Vehicle Identification Number (VIN) break for the last change was sequence WD107995. The schematics and thumbnails illustrate these changes to these circuits.
In order to avoid any confusion, perform the following:- Remove the switch plates containing the plungers and pads so that the RH door lock switch plate connectors can be probed directly.
- Visually checking the circuits by their wire color and where they are on the connector (terminal cavity location) will allow the technician to probe at the correct point.
- Use new X-mas tree fasteners when reinstalling the door lock switch plate plunger assembly.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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This step performs the Diagnostic Mode 3.
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This step inspects whether the malfunction is in the sliding door or in the vehicle.
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This step inspects for open in CKT 750 located on the door side.
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This step inspects for an open in CKT 750 located on the vehicle side.
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This step inspects for an open in CKT 2910 located on the door side.
-
This step determines whether the following conditions exist:
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This step inspects for a short to the ground in CKT 2910 located on the vehicle side.
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This step inspects for an open in CKT 2910 located on the vehicle side.
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This step determines whether the following conditions exist:
| • | CKT 2910 is shorted to ground located on the door side |
| • | The power sliding door unlatch actuator is faulty |
| • | The malfunction is intermittent |
| • | The rear side door actuator control module is faulty |
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Perform the On-Board System Diagnostic Check. Refer to Power Sliding Door (PSD) Diagnostic System Check . Has the On-Board System Diagnostic Check been performed? | -- | Go to Step 2 | |
2 | Check the B/U LAMP fuse. Is the fuse open? | -- | Go to Step 3 | Go to Step 4 |
3 | Check circuit 275/840 for a short to ground. Is a short to ground present? | -- | Go to Step 5 | Go to Step 6 |
4 | Check circuit 275/840 for an open. Is an open present? | -- | Go to Step 7 | Go to Step 8 |
5 | Repair a short to ground then replace the B/U LAMP fuse. Is the repair complete? | -- | Go to Step 26 | -- |
6 | Replace the B/U LAMP fuse. Is the repair complete? | -- | Go to Step 26 | -- |
7 | Repair an open. Is the repair complete? | -- | Go to Step 26 | -- |
Did the sliding door open from the latched (closed) to the open (past ajar position, not fully open)? | -- | Go to Step 26 | Go to Step 9 | |
Upon repeating the Diagnostic Mode 3, did the test lamp light? | -- | Go to Step 10 | Go to Step 11 | |
Does the resistance measure in the specified range? | Less than 2 ohms | Go to Step 12 | Go to Step 13 | |
Connect a test lamp between B+ and the pillar mounted right door lock switch plate connector terminal A. Did the test lamp light? | -- | Go to Step 18 | Go to Step 19 | |
Using a J 39200 , measure the resistance between the PSD unlatch actuator harness connector terminal B and the door mounted right door lock switch plate terminal C. Does the resistance measure in the specified range? | Less than 2 ohms | Go to Step 14 | Go to Step 15 | |
13 | Repair the poor connection or open in CKT 750 between the power sliding door unlatch actuator and the door mounted right door lock switch plate. Refer to Wiring Repairs in Wiring. Is the repair complete? | -- | Go to Step 26 | -- |
Does the resistance measure at the specified range? | Infinite | Go to Step 16 | Go to Step 17 | |
15 | Repair the poor connection or the open in CKT 2910 between the power sliding door unlatch actuator and the door mounted right door lock switch plate. Refer to Wiring Repairs in Wiring. Is the repair complete? | -- | Go to Step 26 | -- |
16 | Contact the Technical Assistance Center for the latest technical information and troubleshooting hints. Is the action complete? | -- | Go to Step 26 | -- |
17 | Repair the short to ground in CKT 2910 between the power sliding door unlatch actuator and the door mounted right door lock switch plate. Refer to Wiring Repairs in Wiring. Is the repair complete? | -- | Go to Step 26 | -- |
Does the resistance measure in the specified range? | Infinite | Go to Step 20 | Go to Step 21 | |
19 | Repair the poor connection or open in CKT 750 between the power sliding door unlatch actuator and the rear side door actuator control module. Refer to Wiring Repairs in Wiring. Is the repair complete? | -- | Go to Step 26 | -- |
Using a J 39200 , measure the resistance between the rear side door actuator control module harness connector C1 terminal D and the pillar mounted right door lock switch plate connector terminal C. Does the resistance measure in the specified range? | Less than 10 ohms | Go to Step 22 | Go to Step 23 | |
21 | Repair the short to ground in CKT 2910 between the power sliding door unlatch actuator and the rear side door actuator control module. Refer to Wiring Repairs in Wiring. Is the repair complete? | -- | Go to Step 26 | -- |
Upon entering the Diagnostic Mode 3, did the sliding door open from the latched (closed) to the open position (past the ajar position, but not fully open)? | -- | Go to Step 24 | Go to Step 25 | |
23 | Repair the poor connection or open in CKT 2910 between the power sliding door unlatch actuator and the rear side door actuator control module. Refer to Wiring Repairs in Wiring. Is the repair complete? | -- | Go to Step 26 | -- |
24 | A malfunction is not present at this time. Refer to Diagnostic Aids for information on intermittent failures. Is the action complete? | -- | Go to Step 26 | -- |
25 | Replace the rear side door actuator control module. Refer to Rear Side Door Actuator Control Module Replacement . Is the repair complete? | -- | Go to Step 26 | -- |
26 |
Does the PSD operate normally? | -- | System OK |
