The following service article apply for 1993 Jeep ZJ Grand Cherokee’s ignition system faults and troubleshooting. This article discuss ignition system operation, components identification and location, diagnostic procedures and jeep zj grand cherokee ignition system schematics adjustments, removal and installation of ignition system components, maintenance, service and repair procedures as well as technical specification of ZJ Grand Cherokee 1993. The article is divided into sections as follows:

Component Identification/System Operation, contains detail information about Automatic Shut Down Relay (ASD) Relay, Camshaft and Crankshaft Position Sensor, Distributors, Engine Coolant Temperature Sensor, Ignition Coil, Intake Manifold Charge Air Temperature Sensor, Manifold Absolute Pressure (MAP) Sensor, Powertrain Control Module (PCM) and Throttle Position Sensor. To different ignition operating systems are used. One system is used on the 4.0L 6 cylinder engine. The other is used on the 5.2L V-8 engine. Similarities and differences between the two systems will be discussed here.

Diagnostic and Service Procedures, provides comprehensive basic ignition system diagnostics and service adjustments which covers Automatic Shut Down (ASD) Relay, Camshaft and Crankshaft Position Sensor Test, Distributor Cap and Rotor, Engine Coolant Temperature Sensor Test, Ignition Secondary Circuit Diagnosis, Spark Plug Secondary Cables, etc.

Component Removal and Installation, covers procedures for removing and
installing the ignition system components. When removing the connector from sensor, do not pull directly on wiring harness. Fabricate an L-shaped hook tool from
a coat hanger (approximately eight inches long). Place the hook part of tool under the connector for removal. The connector is snapped onto the sensor. It is not
equipped with a lock type tab.

Find more information about 1993 Jeep ZJ Grand Cherokee Ignition System Faults and Troubleshooting here – 40 pages of PDF file docs. (source: scribd.com).



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