Failure To Start Test
CAUTION:
Perform IGNITION SYSTEM SPARK TEST first. Failure to do so may result in lost diagnostic time or incorrect test results.
- Determine that sufficient battery voltage is present for cranking and ignition systems (12.4 volts). Crank engine for 5 seconds while monitoring voltage at coil positive terminal. If coil voltage remains near zero during entire period of cranking, see NO START TESTS NO. 13 and 15 in COMPUTERIZED ENGINE CONTROLS section.
- If voltage is close to battery voltage and drops to zero after 1-2 seconds of cranking, see NO START TEST NO. 14 in COMPUTERIZED ENGINE CONTROLS section.
- If voltage remains close to battery voltage during the entire 5 seconds, turn ignition off. Remove 14-pin connector from SMEC. Check 14-pin connector for spread terminals. Remove lead from positive terminal of ignition coil. Install a jumper wire between battery positive terminal and positive terminal of coil.
- Using a jumper wire with a .33 microfarad capacitor, momentarily ground terminal No. 12 of 14-pin connector. See Fig 1 and Fig 2. A spark should be generated when ground is removed.
- If spark is generated, replace SMEC. If no spark is generated, use jumper wire with capacitor to ground negative coil terminal. If spark is generated, repair wiring harness for open condition. If no spark is produced, replace ignition coil.