Diagnosis of the circuits in the automatic transmission (A/T) wiring harness assembly related to the automatic transmission fluid pressure (TFP) manual valve position switch is covered in the diagnostic resistance check for that component.

Refer to Transmission Fluid Pressure Manual Valve Position Switch Resistance Check .

1. Install J 39775 jumper harness on the transmission 20-way connector, if needed.
2. Using a J 39200 digital multimeter (DMM) and a J 35616-A connector test adapter kit, measure the resistance between terminals A and E (1-2, 3-4 SS valve).

Is the resistance within the specified values?

19-24 ohms at 20°C (68°F)

24-31 ohms at 88°C (190°F)

Go to Step 3

Go to Step 2

1. Disconnect the A/T wiring harness assembly from the 1-2, 3-4 SS valve.
2. Using the J 39200 DMM, measure the resistance of the 1-2, 3-4 SS valve.

Is the resistance within the specified values?

19-24 ohms at 20°C (68°F)

24-31 ohms at 88°C (190°F)

Go to Step 14

Go to Step 16

Measure the resistance between terminals B and E (2-3 SS valve).

Is the resistance within the specified values?

19-24 ohms at 20°C (68°F)

24-31 ohms at 88°C (190°F)

Go to Step 5

Go to Step 4

1. Disconnect the A/T wiring harness assembly from the 2-3 SS valve.
2. Using the J 39200 DMM, measure the resistance of the 2-3 SS valve.

Is the resistance within the specified values?

19-24 ohms at 20°C (68°F)

24-31 ohms at 88°C (190°F)

Go to Step 14

Go to Step 16

Measure the resistance between terminals T and E (TCC PWM solenoid valve).

Is the resistance within the specified values?

10-12 ohms at 20°C (68°F)

13-15 ohms at 88°C (190°F)

Go to Step 7

Go to Step 6

1. Disconnect the A/T wiring harness assembly from the TCC PWM solenoid valve.
2. Using the J 39200 DMM, measure the resistance of the TCC PWM solenoid valve.

Is the resistance within the specified values?

10-12 ohms at 20°C (68°F)

13-15 ohms at 88°C (190°F)

Go to Step 14

Go to Step 16

Measure the resistance between terminals C and D (PC solenoid valve).

Is the resistance within the specified values?

3-5 ohms at 20°C (68°F)

5-6 ohms at 88°C (190°F)

Go to Step 9

Go to Step 8

1. Disconnect the A/T wiring harness assembly from the PC solenoid valve.
2. Using the J 39200 DMM, measure the resistance of the PC solenoid valve.

Is the resistance within the specified values?

3-5 ohms at 20°C (68°F)

5-6 ohms at 88°C (190°F)

Go to Step 14

Go to Step 16

Measure the resistance between terminals S and V (A/T ISS).

Is the resistance within the specified values?

893-1127 ohms at 20°C (68°F)

1132-1428 ohms at 88°C (190°F)

Go to Step 11

Go to Step 10

1. Disconnect the A/T wiring harness assembly from the A/T ISS.
2. Using the J 39200 DMM, measure the resistance of the A/T ISS.

Is the resistance within the specified values?

893-1127 ohms at 20°C (68°F)

1132-1428 ohms at 88°C (190°F)

Go to Step 14

Go to Step 16

Measure the resistance between terminals M and L (TFT sensor).

Is the resistance within the specified values?

3164-3867 ohms at 20°C (68°F)

225-285 ohms at 88°C (190°F)

Go to Step 13

Go to Step 12

1. Disconnect the A/T wiring harness assembly from the TFT sensor.
2. Using the J 39200 DMM, measure the resistance of the TFT sensor.

Is the resistance within the specified values?

3164-3867 ohms at 20°C (68°F)

225-285 ohms at 88°C (190°F)

Go to Step 14

Go to Step 16

Using the J 39200 DMM and the J 35616-A connector test adapter kit, measure the resistance of the A/T wiring harness assembly from pins A, B, C, D, E, L, M, S, T and V of the transmission 20-way connector to the transmission case.

Is the resistance more than shown?

250 K ohms

System OK

Go to Step 15

Inspect for high resistance:

Was the condition found and corrected?

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Go to Step 15

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Replace the Automatic Transmission Wiring Harness Assembly.

Is the replacement complete?

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Go to Step 1

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Replace the component.

Is the replacement complete?

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Go to Step 1

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