GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2006 🢒 GTO 🢒 DTC 🢒 DTC P0565

Circuit Description

The cruise control ON/OFF switch is a normally open switch that closes when the switch is activated. When activated, the switch supplies signal voltage to the cruise control ON signal circuit. The powertrain interface module (PIM) converts the signal voltage input into serial data, which is used by the engine control module (ECM) to enable or disable the cruise control system, and by the instrument cluster to display cruise control status.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0565 Cruise Control On Signal Malfunction

Conditions for Running the DTC

Conditions for running the DTC are:

    • The ignition is switched ON.
    • The ignition voltage is 10-16 volts.

Conditions for Setting the DTC

The PIM detects the cruise control ON/OFF function of the cruise control switch assembly is the ON position for 60 seconds or more.

Action Taken When the DTC Sets

When the DTC sets, there is no message displayed on the multifunction display.

Conditions for Clearing the DTC

Refer to Diagnostic General Descriptions for information on the conditions for clearing DTCs.

Diagnostic Aids

Refer to Cruise Control Description and Operation for cruise control switch description, operation and inspection procedures. Refer to Cruise Control Schematics , Cruise Control Component Views , and Cruise Control Connector End Views . Refer to Testing for Intermittent Conditions and Poor Connections for intermittent fault conditions.

Test Description

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

  1. This step tests the cruise control ON/OFF switch using the scan tool.

  2. This step tests the cruise control ON/OFF switch signal circuit.

  3. This step tests the PIM harness connector for serviceability.

Step

Action

Yes

No

Schematic Reference: Cruise Control Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Using the scan tool, view the cruise control ON/OFF switch status parameter in the Powertrain Interface Module (PIM) data list.

Does the scan tool display ACTIVE?

Go to Step 4

Go to Step 3

3
  1. Switch OFF the ignition for 10 seconds.
  2. Operate the vehicle within the conditions for setting DTC P0565.
  3. Using the scan tool, select the DTC display function.

Does DTC P0565 fail this ignition cycle?

Go to Step 4

Refer to Diagnostic Aids

4
  1. Disconnect the battery positive side of the cruise control switch assembly.
  2. Using the scan tool, view the cruise control ON/OFF switch status parameter in the PIM data list.

Does the scan tool display Active?

Go to Step 6

Go to Step 5

5

Replace the cruise control switch. Refer to Cruise Control Switch Replacement .

Has the repair been completed?

Go to Step 9

--

6

Inspect the cruise control ON/OFF switch signal circuit for a short to voltage.

Did you find and correct the condition?

Go to Step 9

Go to Step 7

7

Inspect for shorted terminals or poor connections at the PIM wiring harness connector.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

8

Replace the PIM. Refer to Powertrain Interface Module Replacement .

Has the repair been completed?

Go to Step 9

--

9
  1. Using the scan tool, clear the DTCs.
  2. Switch OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the conditions for running the DTC.

Does DTC P0565 fail this ignition cycle?

Go to Step 2

Repair Complete