Failure To Start Test
CAUTION:
Perform IGNITION SYSTEM STARTING 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. If coil voltage remains near zero during entire period of cranking, see checks of SMEC and auto-shutdown relay in CHRYSLER MOTORS 3.0L ENGINE CONTROL SYSTEM article in COMPUTERIZED ENGINE CONTROLS section.
- If voltage is close to battery voltage and drops to zero after 1-2 seconds of cranking, see check of distributor reference pick-up circuit to SMEC in CHRYSLER MOTORS 3.0L ENGINE CONTROL SYSTEM article in COMPUTERIZED ENGINE CONTROLS section.
- If voltage remains close to battery voltage during the entire 5 seconds, remove 14-pin connector from SMEC (ignition off). 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 special jumper, 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 special jumper to ground negative coil terminal. If spark is generated, repair wiring harness for open condition. If no spark is produced, replace ignition coil.