system, refer to the manufacturer's manual. Not all systems may be checked for spark across a gap to ground without damaging the module. Other systems may only allow specific plug wires to be tested by sparking across the gap. Since these components are easily damaged by heat, shock, or reverse polarity, you must be extra careful in checking them. The following steps form the procedure for troubleshooting breakerless systems:
1. Pull the high-voltage cable from the distributor cap and hold the loose end of the cable about one-half of an inch from a good grounding point on the engine block.
2. With the ignition switch ON, crank the engine and look for a spark to bridge the gap between the loose end of the cable and the grounding point. If you see a blue spark, reconnect the high-voltage cable to the distributor and proceed to Step 3. If you do not see a spark or see a weak spark, proceed to Step 4.
3. Pull the cable from a spark plug and hold the loose end of the cable about one-half of an inch from the spark plug terminal. With the ignition switch ON, crank the engine and look for a spark to bridge the gap between the loose end of the spark plug cable and spark plug terminal. A blue spark here indicates a normal operating condition.
4. With a weak spark or no spark, test the coil. Since a special coil is used in this ignition system, you cannot test it with a conventional coil tester. Use an ohmmeter to check the continuity of the primary and secondary windings of the coil. With leads disconnected from the coil, connect the ohmmeter across the primary terminals. If the meter reading is infinite, the primary winding is open. The
Table 4-1.-Troubleshooting Chrysler Electronic Ignition