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(10) If no spark is produced, replace the ignition coil. POOR PERFORMANCE TEST To prevent unnecessary diagnostic time and possible incorrect results, the Testing For Spark WARNING: APPLY PARKING BRAKE AND/OR BLOCK Check and adjust basic timing (refer to the specifica- tion section of this group and see service procedures). COOLANT TEMPERATURE SENSOR TEST (1) With key off, disconnect wire connector from coolant temperature sensor (Fig. 6). (2) Connect one lead of ohmmeter to one terminal of coolant temperature sensor. (3) Connect the other lead of ohmmeter to remaining terminal of coolant temperature sensor. The ohmmeter Refer to On Board Diagnostics in the General Diagnosis section of Group 14. Also, refer to the MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR Refer to the DRB II scan tool and appropriate Pow- ertrain Diagnostic Procedures manual for further test Fig. 5 60-Way Electrical Connector, Powertrain con- trol module Fig. 6 Coolant Temperature Sensor Test Ä IGNITION SYSTEMS 8D - 13 |