Ignition System No Start Test

Fig. 2 Coil negative terminal jumper wire:

Before proceeding with this test, perform "Ignition System Starting Test." Failure to do so may lead to unnecessary diagnostic time and incorrect test results.
1. Measure battery voltage using a suitable voltmeter. Battery voltage must be at least 12.4 volts to deliver the necessary voltage to operate the cranking and ignition system properly.
2. Crank engine for five seconds while noting voltage at coil (+) terminal.
3. If voltage does not remain near battery voltage during cranking, problem is contained within the SBEC engine electronics. Refer to the appropriate chapter in the "Fuel Injection Section" for diagnosis.
4. If voltage remains near battery voltage during cranking, turn ignition Off and disconnect 60-way electrical connector, from SBEC and inspect connector for any loose terminals.
5. Remove coil (+) lead, then connect suitable jumper wire between battery (+) and coil (+) terminals.
6. Momentarily ground terminal 19 of 14-way connector using a suitable jumper wire, Fig. 2. A spark should be present when ground is removed.
7. If a spark is present, replace SBEC. If spark is not present, use special jumper to directly ground coil (-) terminal.
8. If spark is present, locate and repair open in wiring harness. If spark is not present, replace ignition coil.