For 1990-2009 cars
Power Door Systems Components
PSD Module Control Switches
Thumbnail for PSD Diagnostic System Check (2 of 2)
Handling ESD Sensitive Parts Notice
Thumbnail for PSD Diagnostic System Check (2 of 2)
Cell 14: G302
Cell 117: Interior Lamp and Multifunction Switch, Right Rear Door Latch, Release Actuator Switch
Cell 11: IGN 1 Fuse
Cell 10: Ignition Switch, Transaxle Range Switch
Power Door Systems Components
Power Sliding Door (PSD) Circuit Description
99 U-Van Thumbnail for PSD Diagnostic System Check
Cell 10: EBCM, EBTCM, Battery
Cell 10: Underhood Accessory Wiring Junction Block
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Cell 11: UH: Radio Fuse
Cell 51: BCM: Ignition Input, Door Locks, Exterior Lamps Output
99 U-Van Thumbnail for PSD Diagnostic System Check

### Circuit Description

The rear side door actuator control module is capable of performing diagnostics. The rear side door actuator control module sounds Diagnostic Trouble Codes (DTCs) through the power sliding door alarm when the Diagnostic Mode 1 is active. The rear side door actuator control module will not enter the Diagnostic Mode 1 when the power sliding door alarm is faulty, or no power or ground is provided to the rear side door actuator control module.

### Diagnostic Aids

• | An intermittent failure may be difficult to detect and to accurately diagnose. Faulty electrical connections or wiring causes most intermittent problems. When an intermittent condition is suspected, inspect the suspected circuits for the following conditions:

- | Poor mating of connector halves

- | Backed out terminals

- | Improperly formed or damaged terminals

- | Wire chafing

- | Poor wire-to-terminal connections

- | Dirty or corroded terminals

- | Damaged connector bodies

- | A broken wire inside the insulation

• | Use a J 35616 whenever a diagnostic procedure requests probing or inspecting a terminal. Using the J 35616 ensures that no damage to the terminal will occur. Using the J 35616 provides an estimate of whether the contact tension is sufficient.

### Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. This step tests for an open RADIO fuse.

2. This step tests for a short to ground in CKT 640.

3. This step tests for the PSD OPEN/CLOSE switch (overhead console or right B-pillar) contacts always closed, or a short to ground in CKT 1894.

4. This step tests for an open in CKT 1894.

5. This step tests for a short to ground or an open in CKT 1896.

6. This step tests for an open in CKT 1850.

7. This step tests for an open in CKT 640.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Power Sliding Door (PSD) Diagnostic System Check performed? | -- | Go to Step 2 | Go to Power Sliding Door (PSD) Diagnostic System Check
2 | Inspect the RADIO fuse located in the underhood accessory wiring junction block. Is the RADIO fuse open? | -- | Go to Step 3 | Go to Step 4
3 |

1. Replace the RADIO fuse.
2. Test the RADIO fuse again.

Is the RADIO fuse open again?

--

Go to Step 9

Go to Step 13

4 |

1. Disconnect the rear side door actuator control module connector C2.
2. Using a J 39200 digital multimeter (DMM), measure the resistance between the rear side door actuator control module harness connector C2 terminal 10 and ground.

Does the resistance measure within the specified range?

Infinite

Go to Step 5

Go to Power Sliding Door (PSD) On/Off Switch Inoperative

5 |

1. Leave the J 39200 DMM connected from the previous step.
2. While measuring the resistance using the J 39200 DMM, press the PSD OPEN/CLOSE switch (overhead console or right B-pillar).

Does the resistance measure within the specified range?

Pressed: less than 2 ohms

Released: Infinite

Go to Step 6

Go to Power Sliding Door (PSD) On/Off Switch Inoperative

6 |

1. Set the PSD ON/OFF switch, located in the overhead console, to the OFF position.
2. Using a J 39200 DMM, measure the resistance between the rear side door actuator control module harness connector C2 terminal 13 and ground.
3. Leave the J 39200 DMM connected.
4. Set the PSD ON/OFF switch, located in the overhead console, to the ON position.
5. Using the J 39200 DMM, measure the resistance again.

Does the resistance measure within the specified range?

Off: InfiniteOn: less than 2 ohms

Go to Step 7

Go to Power Sliding Door (PSD) On/Off Switch Inoperative

7 |

1. Turn the ignition switch to the LOCK position.
2. Disconnect the rear side door actuator control module connector C1.
3. Connect a test lamp between B+ and the rear side door actuator control module harness connector C1 terminal E.

Does the test lamp light?

--

Go to Step 8

Go to Step 10

8 | Connect a test lamp between the rear side door actuator control module harness connector C2 terminal 12 and ground. Does the test lamp light? | -- | Go to Step 12 | Go to Step 11
9 | Repair the short to ground in CKT 640. Is the repair complete? | -- | Go to Step 13 | --
10 | Repair the poor connection or the open in CKT 1850. Is the repair complete? | -- | Go to Step 13 | --
11 | Repair the poor connection or the open in CKT 640. Is the repair complete? | -- | Go to Step 13 | --
12 |

1. Test for an inoperative PSD alarm. Refer to Power Sliding Door (PSD) Buzzer Inoperative .
2. If the PSD alarm is OK, then replace the rear side door actuator control module. Refer to Rear Side Door Actuator Control Module Replacement .

Is the repair complete?

--

Go to Step 13

--

13 |

1. Turn the ignition switch to the LOCK position.
2. Reconnect any connectors/components removed.
3. Perform the PSD re-initialization. Refer to Power Sliding Door (PSD) Re-Initialization .

Is the repair complete?

--

System OK

Go to Power Sliding Door (PSD) Diagnostic System Check