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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Automatic Transaxle - 4T80-E - DTC P0218 To DTC P0977) >> DTC P0717 >> Test Description

Test Description

WARNING: This page is about a different car, the 2007 Cadillac DTS. 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:  This step tests the AT ISS for correct resistance.
  2. 8:  This step tests the AT ISS high signal circuit for being shorted to another circuit within the transmission.
DTC P0717

Step Action Values Yes No
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
    3. IMPORTANT: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records. Using the Clear Info function erases the Freeze Frame and Failure Records from the TCM.
  3. Record the DTC Freeze Frame and Failure Records.
  4. Clear the DTC.
  5. Start the engine.
  6. Select Transmission ISS on the scan tool.
Is the transmission input speed greater than the specified value?		 500 RPM Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the AT inline 20-way connector. Additional DTCs may set.
  3. Install the J 44152  Jumper Harness (20 pins) on the transmission side of the AT inline 20-way connector. See Special Tools .
  4. Using the DMM, and the J 35616  GM Terminal Test Kit, measure the resistance between terminals S and V of the J 44152  . See Special Tools .

    Refer to Automatic Transmission Inline 20-Way Connector End View .

Does the resistance measure within the specified range?		 1,260-1,872 Ω Go to Step 7  Go to Step 4 
4 Is the resistance greater than the specified value? 1,872 Ω Go to Step 5  Go to Step 6 
5
  1. Test the high signal circuit of the AT ISS for a high resistance or an open between the AT inline 20-way connector and the AT ISS.
  2. Test the low signal circuit of the AT ISS for a high resistance or an open between the AT inline 20-way connector and the AT ISS.

    Refer to Circuit Testing .

Did you find a high resistance or open condition?		 - Go to Step 11  Go to Step 12 
6 Test the high signal circuit and the low signal circuit of the AT ISS for being shorted together between the AT inline 20-way connector and the AT ISS.
Refer to Circuit Testing .
Did you find the condition?		 - Go to Step 11  Go to Step 12 
7 Measure the resistance between terminal S of the J 44152  and ground. See Special Tools .
Refer to Automatic Transmission Inline 20-Way Connector End View .
Does the resistance measure less than the specified value?		 10M Ω Go to Step 11  Go to Step 8 
8  Measure the resistance between terminal S and all other terminals, except terminal V, of the J 44152  . See Special Tools .
Refer to Automatic Transmission Inline 20-Way Connector End View .
Is the resistance between terminal S and any other terminal, except terminal V, less than the specified value?		 10M Ω Go to Step 11  Go to Step 9 
9 Test the high signal circuit of the AT ISS for a high resistance, an open, a short to ground or a short to voltage between the TCM connector and the AT inline 20-way connector.
Refer to Circuit Testing and Wiring Repairs .
Did you find and correct a condition?		 - Go to Step 14  Go to Step 10 
10 Test the low signal circuit of the AT ISS for high resistance or an open between the TCM connector and the AT inline 20-way connector.
Refer to Testing for Continuity and Wiring Repairs .
Did you find and correct a condition?		 - Go to Step 14  Go to Step 13 
11
IMPORTANT: The automatic transmission wiring harness consists of 2 separate harnesses, the Automatic Transmission Wiring Harness Assembly and the Automatic Transmission Wiring Extension Harness Assembly. In order to avoid the unnecessary replacement of parts, only replace the Automatic Transmission Wiring Harness Assembly.
Replace the automatic transmission wiring harness.Refer to Input Speed Sensor and Wiring Harness Removal .Did you complete the replacement?		 - Go to Step 14  -
12 Replace the AT ISS.
Refer to Input Speed Sensor and Wiring Harness Removal .
Did you complete the replacement?		 - Go to Step 14  -
13 Replace the TCM.
Refer to Control Module References .
Did you complete the replacement?		 - Go to Step 14  -
14 Perform the following procedure in order to verify the repair:
  1. Select DTC.
  2. Select Clear Info.
  3. Operate the vehicle under the following conditions:
    • Place the transmission in PARK.
    • Start the engine.
    • The transmission input shaft speed must be greater than 500 RPM for 3 seconds.
  4. Select Specific DTC.
  5. Enter DTC P0717.

Has the test run and passed?		 - Go to Step 15  Go to Step 2 
15 With the 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 - Vehicle System OK
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