GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1999 🢒 Silhouette 🢒 Body and Accessories 🢒 Doors 🢒 Power Sliding Door (PSD) System Does Not Enter Diagnostic Mode 1

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 an a short to ground in circuit 640.

  3. This step tests for a power sliding door open/close switch (overhead console or RH B-pillar) contacts always closed, or a short to ground in circuit 1894.

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

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

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

  7. This step tests for an open in circuit 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

Check the RADIO fuse located in the underhood accessory wiring junction block for an open.

Is the RADIO fuse open?

--

Go to Step 3

Go to Step 4

3
  1. Replace the RADIO fuse.
  2. Check 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 DMM, measure the resistance between the rear side door actuator control module harness connector C2 terminal 10 and ground.

Does the resistance measure at the specific range?

Infinite

Go to Step 5

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

5
  1. Leave the J 39200 DMM connected from the previous step.
  2. While measureing the resistance using the J 39200 DMM, press power sliding door open/close switch (overhead console or RH B-pillar).

Does the resistance measure in the specified range?

Pressed: Less than 2 ohms

Go to Step 6

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

6
  1. Set the power sliding door on/off switch located in the overhead console to the off position.
  2. Using a J 39200 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 power sliding door 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 in the specified range?

Off: Infinite

On: Less than 2 ohms

Go to Step 7

Refer 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. Using a test light, connect between B+ and the rear side door actuator control module harness connector C1 terminal E.

Did the test light illuminate?

--

Go to Step 8

Go to Step 10

8

Using a test light, connect between the rear side door actuator control module harness connector C2 terminal 12 and ground.

Did the test light illuminate?

--

Go to Step 12

Go to Step 11

9

Repair the short to ground in circuit 640.

Is the repair complete?

--

Go to Step 13

--

10

Repair the poor connection or open in circuit 1850.

Is the repair complete?

--

Go to Step 13

--

11

Repair the poor connection or open in circuit 640.

Is the repair complete?

--

Go to Step 13

--

12
  1. Check for an inoperative power sliding door alarm. Refer to Power Sliding Door (PSD) Buzzer Inoperative in this section.
  2. If the power sliding door alarm is OK, replace the rear side door actuator control module. Refer to Rear Side Door Actuator Control Module Replacement in Doors.

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 found later in this section.

Is the repair complete?

--

System OK

Go to Power Sliding Door (PSD) Diagnostic System Check