GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2006 🢒 GTO 🢒 DTC 🢒 DTC P1611

Circuit Description

The scan tool is used to program the powertrain interface module (PIM). Before any programming, a security code must be entered into the scan tool. The PIM will check if the code entered is correct before continuing. If the security code is incorrect, DTC P1611 sets.

After an incorrect security code is entered, the PIM prevents any further attempts to enter a code until a predetermined wait time elapses. There are 6 wait time stages, and for each stage, an incorrect security code may be entered three times before the lockout time is escalated to the next stage.

The lockout stages are as follows:

    • Stage 1 wait time is 10 seconds.
    • Stage 2 wait time is 10 seconds.
    • Stage 3 wait time is 10 minutes.
    • Stage 4 wait time is 20 minutes.
    • Stage 5 wait time is 40 minutes.
    • Stage 6 wait time is 60 minutes.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P1611 Wrong Security Code Entered

Conditions for Running the DTC
    • The ignition is switched ON.
    • The ignition voltage is 10-16 V.

Conditions for Setting the DTC

An incorrect security code is entered into the scan tool when attempting to program the PIM.

Action Taken When the DTC Sets

The vehicle will not start whilst the PIM is in a lock-out state. When the DTC sets, there is no message displayed on the instrument cluster 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 inspects the PIM ground circuits and supply voltage.

    2.

  2. This step inspects the PIM harness connector.

Step

Action

Yes

No

Schematic Reference: Body Control System Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Switch the ignition to OFF for 30 seconds.
  2. Turn the ignition to ON.
  3. Using the scan tool, select the DTC display function. Do not attempt to perform any the scan tool function that requires the PIM security code to be entered.

Does DTC P1611 set this ignition cycle?

Go to Step 5

Go to Step 3

3

Using the scan tool, attempt a programming function that requires the powertrain interface module (PIM) security code to be entered. Refer to Body Control Module (BCM) Programming/RPO Configuration .

Was the programming function successfully performed?

System OK

Go to Step 4

4

  1. Test all ground circuits of the PIM for a high resistance or an open circuit condition.
  2. Test the PIM ignition supply voltage circuit for a high resistance, open circuit or short to ground condition.

Has a fault been found and repaired?

Go to Step 7

Go to Step 5

5

Inspect for poor connections at the PIM wiring connector.

Has any fault been found and corrected?

Go to Step 7

Go to Step 6

6

Replace the PIM. Refer to Powertrain Interface Module Replacement .

Has the repair been completed?

Go to Step 7

--

7
  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 P1611 set this ignition cycle?

Go to Step 2

System OK