Red Wire Circuit
- If no spark occurred in step 3) of BASIC SYSTEM TEST, measure battery voltage. Using a straight pin, puncture Red wire of control module's 2-wire harness (between module and connector). See Figure.
- Connect voltmeter positive lead to straight pin and negative lead to ground. Voltage on Red wire should be within 1 volt of battery voltage. If so, proceed to step 1) of COIL PRIMARY CIRCUIT TEST.
- If not, repair Red wire circuit and repeat previous tests. If spark occurs at modified plug, ignition system is okay.