Except 3.8L FWD
- Turn ignition switch to "OFF" position. Remove and ground coil wire. Attach digital voltmeter negative lead to distributor base. Disconnect spout in-line connector near distributor. See Fig 1. Attach positive lead to ignition module side of connector.
- Place ignition switch in the "ON" position. Using ignition key, bump the starter 10 times, measuring voltage while engine is stationary. Allow digital voltmeter reading to stabilize before taking measurement. Record all values.
- If lowest reading is less than 0.5 volts, replace stator assembly. If highest reading is less than 70% of battery voltage, but the lowest reading is greater than 0.5 volts, remove TFI ignition module from distributor.
- Inspect stator and TFI terminals for misalignment or damage. If terminals are okay, replace stator assembly.
- Measure resistance between the TFI module terminals. See Fig 1. Refer to TFI MODULE RESISTANCE VALUES table.TFI MODULE RESISTANCE VALUES
Measure Between Terminals Ohms "GND"-"PIP In" Greater Than 500 "PIP PWR"-"PIP In" Less Than 2000 "PIP PWR"-"TFI PWR" Less Than 200 "GND"-"IGN GND" Less Than 2 "PIP In"-"PIP" Less Than 200 - If TFI module resistance readings are correct, replace stator assembly. If any resistance readings are not within specification, replace TFI module.
- If voltage reading in step 2) is greater than 70% of battery voltage, but TFI module resistance values are correct, replace stator assembly.
- If reading in step 2) is not between 0.5 volts and 70% of battery voltage, measure resistance between TFI module terminals "PIP" and "SPOUT".
- Resistance should be less than 7000 ohms. If resistance is not within specification, replace TFI module. If resistance is correct, proceed to the appropriate TFI IGNITION MODULE test.