GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2004 🢒 VUE - AWD 🢒 DTC 🢒 DTC P0507

Description

The DTC P0507 Idle Speed High diagnostic monitors the engine speed. The powertrain control module (PCM) controls the throttle actuator control (TAC) motor in order to regulate the air flow through the throttle body. The amount of air flowing through the throttle body determines the engine speed. If there is a malfunction in the TAC system, an intake air leak, or other engine control system fault, DTC P0507 can set.

DTC Descriptors

This diagnostic procedure supports the following DTC.

DTC P0507 Idle Speed High

Conditions for Running the DTC
    • DTCs P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0171, P0172, P0174, P0175, P0222, P0223, P0300-P0306, P0401, P0404, P0506, P1128, P1129, P2100, P2101, P2108, P2122, P2123, P2127, P2128, P2135, P2138, P2176, P2227, P2228, P2229, P2413, and U0107 are not set.
    • Battery voltage is at least 10.5 volts.
    • Intake air temperature (IAT) is at least 69°C (156°F).
    • Engine coolant temperature (ECT) is at least 0°C (32°F).
    • The engine has been running at least 15 seconds.
    • Engine is running in Closed Loop at idle
    • The throttle valve is fully closed
    • The vehicle is in PARK with all engine accessories turned OFF
    • DTC P0507 runs once per drive cycle when the above conditions are met.

Conditions for Setting the DTC
    • The actual engine speed is 200 RPM more than the desired engine speed.
    • The above condition exists for more than 20 seconds.

Action Taken When the DTC Sets
    • The PCM illuminates the malfunction indicator lamp (MIL) after 2 consecutive ignition cycles in which the diagnostic runs with the fault active.
    • The PCM records the operating conditions at the time the diagnostic fails. This information is stored in the Freeze Frame buffer.

Conditions for Clearing the MIL/DTC
    • The MIL turns OFF after 3 consecutively passing trips without a fault present.
    • A history DTC clears after 40 consecutive warm-up cycles without a fault.
    • Perform the scan tool Clear DTC Information function.

Diagnostic Aids

For an intermittent malfunction refer to Intermittent Conditions .

If the DTC P0507 cannot be duplicated, the information included in the Freeze Frame data can be useful in determining vehicle operating conditions when the DTC was first set.

Test Description

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

  1. The Diagnostic System Check-Engine Controls prompts the technician to complete some basic checks and store the Freeze Frame data on the scan tool if applicable. This creates an electronic copy of the data taken when the fault occurred. The information is then stored in the scan tool for later reference.

    2.

  2. This step prompts the technician to check for any condition that can affect the ability of the TAC motor to control engine idle speed. A DTC P0507 can set even if there is no fault in the TAC system. Any condition that can affect the idle speed of the engine must be repaired first, in order to enable proper diagnosis of the DTC P0507.

    3.

  3. This step tests whether the PCM can operate the TAC motor with the scan tool. The TAC motor can be commanded to increase and/or decrease engine speed by using the scan tool Engine Speed Control function. The Engine Speed Control function of the scan tool is disabled when the engine temperature is less than 85°C (185°F).

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check-Engine Controls?

--

Go to Step 2

Go to Diagnostic System Check - Engine Controls

2

  1. Inspect the engine for any of the following conditions:
    2. • A stuck or damaged throttle valve or throttle body
    • A vacuum or intake air leaks
    • An evaporative emission (EVAP) system malfunction
    • Faulty PCV system operation
    • Refer to Crankcase Ventilation System Inspection/Diagnosis in Engine Mechanical - 3.5L.
  2. Repair the condition as necessary.

Did you find and correct a condition?

--

Go to Step 4

Go to Step 3

3
  1. Use the scan tool in order to clear the DTCs.
  2. Perform the Idle Learn Procedure. Refer to Idle Learn .
  3. Turn OFF the engine for 30 seconds.

    4. Start the engine.

  4. Observe the Desired Idle Speed and Engine Speed parameters on the scan tool.

Are the Engine Speed and the Desired Idle Speed within the specified value of each other?

200 RPM

Go to Step 6

Go to Step 4

4

  1. Start the engine.
  2. Select Engine Speed Control in the Special Functions menu of the scan tool. Refer to Scan Tool Output Controls .
  3. Use the scan tool to command the TAC motor to decrease the engine speed to the Desired Idle Speed.

Did the engine speed decrease as commanded by the scan tool to the Desired Idle Speed?

--

Go to Rough, Unstable, or Incorrect Idle and Stalling

Go to Step 5

5
  1. Locate the malfunction in the TAC system.
  2. Repair as necessary.

Did you complete the repair?

--

Go to Step 6

--

6
  1. Use the scan tool in order to clear the DTCs.
  2. Turn the ignition OFF for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC or until the DTC P0507 diagnostic has passed.

Does the DTC run and pass?

--

Go to Step 7

Go to Step 2

7

With a scan tool, observe the stored information, Capture Info.

Does the scan tool display any DTCs that you have not diagnosed?

--

Go to Diagnostic Trouble Code (DTC) List

System OK