LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1857 (Engine Controls And Fuel - 3.5L (L66) - DTC P0030 To DTC P0222) >> DTC P0096 >> Test Description

Test Description

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 1:  The Diagnostic System Check - Vehicle 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. 3:  This step checks for a faulty IAT sensor.
  3. 5:  This step checks the integrity of the IAT sensor input circuit (5-volt reference).
  4. 6:  This step checks the integrity of the IAT sensor ground circuit.
DTC P0096

Step Action Value(s) Yes No
Connector End View Reference: Powertrain Control Module Connector End Views or Engine Controls Connector End Views
1  Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Turn ON the ignition, leaving the engine OFF.
  2. Install a scan tool.
  3. Let the engine cool to the ambient air temperature.
  4. Compare the intake air temperature (IAT) sensor 2 value with the ambient air temperature.
Is the IAT within the specified value of the ambient air temperature?		 0°C-5°C (0°F-9°F) Go to Step 3  Go to Step 4 
3 
IMPORTANT: Observe the IAT sensor scan tool display continuously while performing the tests below.
  1. Disconnect the IAT sensor 2 electrical connector.
  2. Remove the IAT sensor 2 from the air cleaner assembly.
  3. Connect the IAT sensor electrical connector to the IAT sensor 2.
  4. Wrap a cool damp shop towel around the IAT sensor in order to lower the temperature while monitoring the IAT sensor parameter on the scan tool.
  5. Remove the cool shop towel and place a warm damp shop towel around the IAT sensor while monitoring the IAT sensor parameter on the scan tool.
Did the scan tool indicate a skip, jump, or a fixed value in the IAT sensor 2 display?		 - Go to Step 9  Go to Diagnostic Aids In This Test
4
  1. Disconnect the IAT sensor 2 electrical connector.
  2. Jumper the harness side of the IAT sensor 2 electrical connector with a fused jumper wire.
Does the IAT sensor 2 equal the specified value?		 168°C (334°F) Go to Step 9  Go to Step 5 
5 
  1. Remove the fused jumper wire.
  2. Disconnect the powertrain control module (PCM) electrical connector.
  3. Measure the resistance of the IAT sensor 2 input circuit from the sensor to the PCM with a DMM.
Is the resistance less than the specified value?		 0.5 Ω Go to Step 6  Go to Step 7 
6  Measure the resistance of the IAT sensor 2 ground circuit from the sensor to the PCM with a DMM.
Is the resistance less than the specified value?		 0.5 Ω Go to Step 10  Go to Step 8 
7 Repair the short to ground or high resistance in the IAT sensor input circuit between the PCM and the IAT sensor 2. Refer to Wiring Repairs .
Is the action complete?		 - Go to Step 11  -
8 Repair the open circuit or high resistance in the IAT sensor 2 ground circuit between the PCM and the IAT sensor. Refer to Wiring Repairs .
Is the action complete?		 - Go to Step 11  -
9 Replace the IAT sensor 2. Refer to Intake Air Temperature Sensor 2 Replacement .
Did you complete the replacement?		 - Go to Step 11  -
10
  1. Replace the PCM. Refer to Control Module References for replacement, setup, and programming.
  2. Perform the idle learn procedure. Refer to Idle Learn .
Did you complete the replacement?		 - Go to Step 11  -
11
  1. Use the scan tool in order to clear the DTCs.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text or until the DTC P0096 diagnostic test has run.
Does the DTC run and pass?		 - Go to Step 12  Go to Step 2 
12 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 - Vehicle System OK
scientia non olet · About LEMON Manuals