For 1990-2009 cars

#### Internal Wiring Harness Check (1998 4T40-E)

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Install the J 39775 Jumper Harness on the transmission side of the 20-way connector, if needed.
2. Using the J 39200 Digital Multimeter (DMM) and J 35616-A Connector Test Adapter Kit, measure the resistance between terminals A and E: the 1-2 shift solenoid valve.

Is the resistance within the values shown?

Refer to Component Resistance Check

Go to Step 3

Go to Step 2

2 |

1. Disconnect the internal transmission harness from the 1-2 shift solenoid valve.
2. Measure the resistance of the 1-2 shift solenoid valve.

Is the resistance within the values shown?

Refer to Component Resistance Check

Go to Step 14

Go to Step 16

3 | Measure the resistance between terminals B and E: the 2-3 shift solenoid valve. Is the resistance within the values shown? | Refer to Component Resistance Check | 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?

Refer to Component Resistance Check

Go to Step 14

Go to Step 16

5 | Measure the resistance between terminals T and E: the TCC solenoid valve. Is the resistance within the values shown? | Refer to Component Resistance Check | 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?

Refer to Component Resistance Check

Go to Step 14

Go to Step 16

7 | Measure the resistance between terminals C and D: the pressure control solenoid valve. Is the resistance within the values shown? | Refer to Component Resistance Check | Go to Step 9 | Go to Step 8
8 |

1. Disconnect the internal transmission harness from the pressure control solenoid valve.
2. Measure the resistance of the pressure control solenoid valve.

Is the resistance within the values shown?

Refer to Component Resistance Check

Go to Step 14

Go to Step 16

9 | Measure the resistance between terminals S and V: the A/T ISS. Is the resistance within the values shown? | Refer to Component Resistance Check | Go to Step 11 | Go to Step 10
10 |

1. Disconnect the internal transmission harness from the A/T ISS.
2. Measure the resistance of the A/T ISS.

Is the resistance within the values shown?

Refer to Component Resistance Check

Go to Step 14

Go to Step 16

11 | Measure the resistance between terminals M and L of the TFT sensor. Is the resistance within the values shown? | Refer to Component Resistance Check | Go to Step 13 | Go to Step 12
12 |

1. Disconnect the internal transmission harness from the TFP Val. Position Sw.
2. Measure the resistance of the TFT sensor by placing the meter leads between terminals E and F of the TFP Val. Position Sw.

Is the resistance within the values shown?

Refer to Component Resistance Check

Go to Step 14

Go to Step 16

13 | Using the J 39200 Digital Multimeter (DMM) and J 35616-A Connector Test Adapter Kit, measure the resistance of the internal transmission harness 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 within the values shown?

Refer to Component Resistance Check

No condition found, exit the table

Go to Step 15

14 | Inspect for high resistance:

• | Inspect the transmission wiring for poor electrical connections at the transmission 20-way connector and at the component connectors.

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

• | Check for weak terminal tension.

Was the condition found?

--

Verify the repair and Go to Step 1

Go to Step 15

15 | Replace the internal wiring harness. Is the replacement complete? | -- | Verify the repair and Go to Step 1 | --
16 | Replace the component. Is the replacement complete? | -- | Verify the repair and Go to Step 1 | --