GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Montana - 4WD 🢒 DTC 🢒 DTC 022

Circuit Description

The rear side door actuator control module uses an optical sensor to monitor the sliding door position at all times. The optical sensor requires a 5-volt reference and reference return from the rear side door actuator control module. There are 2 signal circuits from the optical sensor to the rear side door actuator control module. The optical sensor sends pulses through both signal circuits to the power sliding door (PSD) module whenever the sliding door is in motion. The optical sensor pulses allow the rear side door actuator control module to calculate the position of the sliding door at all times. The optical sensor signal circuits switch from 0.01-4.5 volts as the sliding door is moving.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC 022 Optical Sensor Inactive With Door in Motion

Conditions for Running the DTC

A DTC 022 may be set whenever the sliding door is in motion.

Conditions for Setting the DTC

The rear side door actuator control module does not detect the optical sensor pulses while the sliding door opening or closing.

Action Taken When the DTC Sets
    • The rear side door actuator control module will attempt to operate the door and stop if the condition is current.
    • The rear side door actuator control module sets DTC 022.

Conditions for Clearing the DTC

All stored DTCs are cleared whenever the on-board diagnostic modes are exited.

Diagnostic Aids
    • Inspect the optical sensor connector and terminals for damage.
    • Inspect the optical sensor pigtail harness for damage.
    • Inspect the optical sensor for proper installation and a secure mount to the actuator motor housing.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. Tests the rear side door actuator control module for the optical sensor 5-volt reference and ground.

    2.

  2. Tests the optical sensor signal circuit. While the door is moving at the approximate power operating speed the average voltage measured should be 2-3 volts.

    3.

  3. Tests the optical sensor signal circuit. While the door is moving at the approximate power operating speed the average voltage measured should be 2-3 volts.

Step

Action

Value(s)

Yes

No

Schematic Reference: Sliding Door Schematics

Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2
  1. Disconnect the optical sensor from the actuator motor and clutch assembly.
  2. Disconnect the optical sensor pigtail harness connector from the rear side door actuator control module.
  3. Measure for continuity between the individual circuits of the pigtail harness connector.

Is there continuity between any of the circuits?

--

Go to Step 8

Go to Step 3

3

  1. Connect the optical sensor to the actuator motor and clutch assembly.
  2. Connect the optical sensor pigtail harness connector to the rear side door actuator control module.
  3. Turn the power sliding door (PSD) ON/OFF switch to the OFF position to exit the on-board diagnostic modes.
  4. Manually close the PSD.
  5. Using a digital voltmeter backprobe the optical sensor connector from the 5-volt reference circuit to the low reference circuit.
  6. Manually open the PSD.

Is the voltage the specified value?

5 V

Go to Step 4

Go to Step 10

4

  1. Using a digital voltmeter backprobe the optical sensor from the terminal 3 signal circuit to the low reference circuit.
  2. Slowly move the PSD from open to closed.

Is the voltage within the specified values?

0.01-4.5 V

Go to Step 5

Go to Step 8

5

  1. Using a digital voltmeter backprobe the optical sensor from the terminal 4 signal circuit to the low reference circuit.
  2. Slowly move the PSD from closed to open.

Is the voltage within the specified values?

0.01-4.5 V

Go to Step 6

Go to Step 8

6
  1. Disconnect the actuator motor connector to the rear side door actuator control module.
  2. Using a DMM test the resistance through the actuator motor.

Is the resistance within the specified values?

1-3 ohms

Go to Step 7

Go to Step 9

7
  1. Disconnect the actuator clutch connector to the rear side door actuator control module.
  2. Using a DMM test the resistance through the actuator clutch.

Is the resistance within the specified values?

2-5 ohms

Go to Step 10

Go to Step 9

8

Inspect and if possible repair any damage to the optical sensor pigtail harness or connector. Refer to Wiring Repairs and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 14

Go to Step 11

9

Inspect and if possible repair any damage to the pigtail harness or connector. Refer to Wiring Repairs and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 14

Go to Step 12

10

Inspect for poor connections at the rear side door actuator control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 14

Go to Step 13

11

Replace the optical sensor. Refer to Rear Side Door Actuator Sensor Replacement .

Is the repair complete?

--

Go to Step 14

--

12

Replace the actuator motor and clutch assembly. Refer to Power Sliding Door Motor Clutch Replacement .

Is the repair complete?

--

Go to Step 14

--

13

Replace the rear side door actuator control module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Is the repair complete?

--

Go to Step 14

--

14

Re-initialize the PSD and operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2