For 1990-2009 cars

#### 4T60-E Transmission Internal Wiring Harness Check

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: This procedure provides a static check of all electrical wires and components in the transmission.
1 |

1. Install a J 38835 Jumper Harness on the transmission 7-way connector.
2. Using J 39200 DMM and a J 35616-A Connector Test Adapter Kit, measure the resistance between terminals A and E (1-2 Shift Solenoid valve).

Is the resistance within the values indicated?

19-24 ohms@ 20°C (68°F) 24-31 ohms@ 88°C (190°F)

Go to Step 3

Go to Step 2

2 |

1. Disconnect the internal transmission harness from the 1-2 Shift Solenoid valve.
2. Using J 39200 DMM measure the resistance of the 1-2 Shift Solenoid valve.

Is the resistance within the values shown?

19-24 ohms@ 20°C (68°F) 24-31 ohms@ 88°C (190°F)

Go to Step 13

Go to Step 15

3 | Measure the resistance between terminals B and E (2-3 Shift Solenoid valve). Is the resistance within the values indicated? | 19-24 ohms@ 20°C (68°F) 24-31 ohms@ 88°C (190°F) | Go to Step 5 | Go to Step 4
4 |

1. Disconnect the internal transmission harness from the 2-3 Shift Solenoid valve.
2. Measure the resistance of the 2-3 Shift Solenoid valve.

Is the resistance within the values shown?

19-24 ohms@ 20°C (68°F) 24-31 ohms@ 88°C (190°F)

Go to Step 13

Go to Step 15

5 | Measure the resistance between terminals D and E (TCC Solenoid valve). Is the resistance within the values indicated? | 19-24 ohms@ 20°C (68°F) 24-31 ohms@ 88°C (190°F) | Go to Step 7 | Go to Step 6
6 |

1. Disconnect the internal transmission harness from the TCC Solenoid valve.
2. Measure the resistance of the TCC Solenoid valve.

Is the resistance within the values shown?

19-24 ohms@ 20°C (68°F) 24-31 ohms@ 88°C (190°F)

Go to Step 13

Go to Step 15

7 | Measure the resistance between terminals C and E (TCC PWM Solenoid valve). Is the resistance within the values indicated? | 10-12 ohms@ 20°C (68°F) 13-15 ohms@ 88°C (190°F) | Go to Step 9 | Go to Step 8
8 |

1. Disconnect the internal transmission harness from the TCC PWM Solenoid valve.
2. Measure the resistance of the TCC PWM Solenoid valve.

Is the resistance within the values shown?

10-12 ohms@ 20°C (68°F) 13-15 ohms@ 88°C (190°F)

Go to Step 13

Go to Step 15

9 | Measure the resistance between terminals F and G (TFT Sensor). Is the resistance within the values indicated? | 3.1-3.9K ohms@ 20°C (68°F) | Go to Step 11 | Go to Step 10
10 |

1. Disconnect the internal transmission harness from the TFT Sensor.
2. Measure the resistance of the TFT Sensor.

Is the resistance within the values shown?

3.1-3.9K ohms@ 20°C (68°F)

Go to Step 13

Go to Step 15

11 | Check for short to ground in TFT sensor circuit. Measure the resistance of the internal wiring harness from pins F and G of the transmission 7-way connector to the transmission case. Is the resistance more than the value indicated? | 20M ohms | Go to Step 12 | Go to Step 13
12 | Check for short to ground in other circuits. Measure the resistance of the internal wiring harness from pins A, B, C, D, and E of the transmission 7-way connector to the transmission case. Is the resistance more than the value indicated? | 250K ohms | System OK | Go to Step 13
13 | Inspect for high resistance:

• | Inspect the transmission wiring for poor connections at the 7-way connector and at the component connector.

• | Look for bent, backed out, deformed or damaged terminals.

• | Look for weak terminal tension.

Was the condition found?

--

Go to Step 1

Go to Step 14

14 | Replace the internal wiring harness. Refer to Solenoids and Wiring Harness Replacement. Is the replacement complete? | -- | System OK | --
15 | Replace the component. Refer to Solenoids and Wiring Harness Replacement. Is the replacement complete? | -- | System OK | --