Isuzu Trooper 1999 Workshop Manual page 1491

7A1–38 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0711 Transmission Fluid Temperature (TFT) Sensor Circuit
Range/Performance (Cont'd)
Step
4 1. Turn the ignition "off".
2. Disconnect the transmission 16–way connector H–53.
3. Install Jumper Harness on the transmission side of the
16–way connector H–53.
4. Using the J39200 DVOM and J35616 Connector Test Adapter
Kit, connect the DVOM leads from terminal M6–3(C) to
terminal M6–5(D).
5. Set the DVOM on MIN/MAX to measure resistance.
6. Record the TFT sensor resistance.
7. Move or massage the automatic transmission wiring harness
assembly from the 16–way connector H–53 to the TFT sensor
connector.
Does the DVOM MAX display a resistance greater than the value
recorded in Action item 6 of this step?
5 Does the DVOM MIN display a resistance less than the value
recorded in Action item 6 of step 4?
6 Inspect circuit RED/BLK and GRY of the engine wiring harness for
an intermittent open or short condition. Repair the circuits if
necessary.
Did you find a problem?
7 Inspect the automatic transmission wiring harness assembly for
an intermittent open in circuits RED/BLK and GRY.
Did you find a problem?
8 Inspect the automatic transmission wiring harness assembly for
an intermittent shorted condition in circuits RED/BLK and GRY.
Did you find a problem?
9 Replace the automatic transmission wiring harness assembly.
Is the replacement complete?
10 Replace TFT Sensor. Refer to Transmission Oil Temperature
Sensor (Adapter Case) in Automatic Transmission (4L30–E)
section.
Is the replacement complete?
11 Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
12 In order to verify your repair, perform the following procedure.
1. Select DTC.
2. Select Clear Info.
3. Drive the vehicle and ensure the following conditions are met:
f The TFT changes by more than 2.25°C (4.05°F) for 11
seconds since startup.
f The TFT does not change by more than 20°C (36°F) within
0.200 second for a period of at least 11 seconds.
4. Select Specific DTC.
5. Enter DTC P0711.
Has the test run and passed?
Action Yes
Go to Step 7 Go to Step 5
Go to Step 8
Go to Step 12 Go to Step 11
Go to Step 9 Go to Step 10
Go to Step 9 Go to Step 10
Go to Step 12
Go to Step 12
Go to Step 12
Begin the
diagnosis again
System OK Go to Step 1
No
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