Ignition System - TFI-IV: Testing: Stator
- 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. Attach positive lead to ignition module side of connector.
- Place ignition switch in the "ON" position. Using ignition key, bump starter 4-5 times and measure 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-IV ignition module from distributor.
- Inspect stator and TFI-IV terminals for misalignment or damage. If terminals are okay, replace stator assembly.
- Measure resistance between TFI-IV module terminals. See Fig 1. Refer to the TFI-IV MODULE RESISTANCE VALUES table.
TFI-IV 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 |