Failure To Start Test
NOTE:
Perform TESTING SPARK AT COIL
before proceeding with test.
- Ensure sufficient battery voltage (12.4 volts) is available to operate cranking and ignition systems. Crank engine for 5 seconds while monitoring voltage at coil positive terminal.
- If voltage remains near zero during entire period of cranking, see appropriate G - TESTS W/ CODES article to check SBEC and ASD relay. If voltage is near battery voltage and drops to zero after 1-2 seconds of cranking, see appropriate G - TESTS W/ CODES article to check distributor pick-up circuit to SBEC.
- If voltage remains near battery voltage during entire 5 seconds, turn ignition off. Disconnect SBEC 60-pin connector. Check 60-pin connector for loose terminals (push-outs).
- Remove positive lead from coil. Connect a jumper wire between battery positive terminal and coil positive terminal. Using a specially constructed jumper wire, momentarily ground SBEC harness connector terminal No. 19. See Fig 1 . Spark should be generated when ground connection is disconnected. See Fig 2 .
- If spark is generated, replace SBEC. If no spark was generated, use special jumper wire directly on coil negative terminal. If spark is produced, repair wiring harness for an open circuit. If no spark is produced, replace ignition coil.