CODES 24,42,44,43 UPDATE DIAGNOSTIC CHART REVISION

ANALYSIS OF RETURNED FUEL INJECTOR ASSEMBLIES INDICATES A MAJOR PORTION HAVE HAD INTERNAL ELECTRICAL DAMAGE. SINCE THE COMPUTER SYSTEM WILL NOT ALLOW ENOUGH CURRENT TO DAMAGE THE COIL, IT MUST BE ASSUMED THAT THEY ARE SUBJECTED TO ABNORMAL CURRENT LOADS DURING DIAGNOSIS. SERVICE MANUAL PROCEDURES STATE THAT ALL DIAGNOSTIC TESTING OF THE INJECTOR BE DONE USING A TEST LIGHT. THE TEST LIGHT SERVES AS A "CURRENT LIMITING" RESISTANCE WHICH WILL PROTECT THE INJECTOR COIL. IF THESE PROCEDURES ARE NOT FOLLOWED, THE INJECTOR COIL WILL BE PERMANENTLY DAMAGED. FULL BATTERY VOLTAGE APPLIED ACROSS THE INJECTOR ASSEMBLY WILL DESTROY THE COIL IN LESS THAN A HALF A SECOND.

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