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Test Description

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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. 3:  A Yes answer indicates that the transmission side of the circuit is functioning properly.
  2. 4:  Although the resistance is within specification in Step 3, there may be a short to ground or a short to voltage condition.
  3. 8:  This step begins the transmission harness diagnosis.
DTC P0716 (3.4L)

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 in Engine Controls - 3.4L
2
  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
    3. IMPORTANT: Before clearing the DTCs, use the scan tool in order to record the Freeze Frame and Failure Records for reference. Using the Clear DTC Information function will erase the stored Freeze Frame and Failure Records from the PCM.
  3. Record the Freeze Frame and Failure Records.
  4. Clear the DTCs.
  5. Start and idle the engine in PARK.
  6. With the scan tool, observe the Transmission ISS parameter.
Does the scan tool display a transmission input shaft speed greater than the specified value?		 100 RPM Go to Intermittent Conditions in Engine Controls - 3.4L Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the transmission 20-way connector. Additional DTCs may set.
  3. Connect the J 44152  jumper harness to the transmission side of the 20-way connector.
  4. Using the J 35616  GM terminal test kit, connect the DMM between the ISS high signal and the ISS low signal circuits of the J 44152  .

    Refer to Automatic Transmission Inline 20-Way Connector End View (3.4L) or Automatic Transmission Inline 20-Way Connector End View (3.6L) .

  5. Measure the resistance.
Is the resistance within the specified value?		 820-1428 ohm Go to Step 4  Go to Step 8 
4 
  1. Leave one lead of the DMM connected to the ISS high signal circuit of the J 44152  .
  2. Using the other lead, test for a short between the ISS high signal circuit and all other terminals in the 20-way connector of the transmission harness.
  3. Test for a short between the ISS high signal circuit and the transmission case.
Refer to Circuit Testing in Wiring Systems.Did you find the condition?		 - Go to Step 10  Go to Step 5 
5 Test the high signal circuit of the ISS for an open, a short to ground or a short to the low signal circuit between the PCM and the AT inline 20-way connector.
Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 6 
6
  1. Turn ON the ignition with the engine OFF.
  2. Test the high signal circuit of the ISS for a short to voltage between the PCM and the AT inline 20-way connector.

    Refer to Testing for a Short to Voltage and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?		 - Go to Step 13  Go to Step 7 
7 Test the low signal circuit of the ISS for an open between the PCM and the AT inline 20-way connector.
Refer to Testing for Continuity and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
8  Test the high signal circuit of the ISS for an open or a short to the low signal circuit of the ISS between the AT inline 20-way connector and the sensor.
Refer to Circuit Testing in Wiring Systems.
Did you find the condition?		 - Go to Step 10  Go to Step 9 
9 Test the low signal circuit of the ISS for an open between the AT inline 20-way connector and the sensor.
Refer to Testing for Continuity in Wiring Systems.
Did you find the condition?		 - Go to Step 10  Go to Step 11 
10 Replace the automatic transmission wiring harness assembly.
Refer to Wiring Harness Replacement .
Did you complete the replacement?		 - Go to Step 13  -
11 Replace the input speed sensor.
Refer to Input Speed Sensor Replacement .
Did you complete the replacement?		 - Go to Step 13  -
12 Replace the PCM.
Refer to Powertrain Control Module (PCM) Replacement in Engine Controls - 3.4L.
Did you complete the replacement?		 - Go to Step 13  -
13 Perform the following procedure in order to verify the repair:
  1. Select DTC.
  2. Select Clear DTC Information.
  3. Start and idle the engine in PARK. The Transmission ISS must be greater than 450 RPM and no change in Transmission ISS greater than 300 RPM for 0.8 seconds.
  4. Select Specific DTC.
  5. Enter DTC P0716.

Has the test run and passed?		 - Go to Step 14  Go to Step 2 
14 With a scan tool, observe the stored information, capture info and DTC info.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List in Engine Controls - 3.4L System OK
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