Savana 1500 RWD V6-4.3L (2007)
Distributor: Testing and Inspection
Distributor Ignition (DI) System Diagnosis
Distributor Ignition (DI) System Diagnosis
System Description
This system includes the crankshaft position (CKP) sensor, the camshaft position (CMP) sensor, the ignition coil with the ignition control module (ICM),
the secondary wires, the spark plugs, and the circuit conductors and connectors.
The powertrain control module (PCM) controls the ignition system. The PCM monitors the input signals from various engine sensors. The PCM controls
the dwell of the ignition primary coil, computes the desired spark timing and firing of the ignition system via an ignition control (IC) timing control
circuit to the ignition control module.
The distributor ignition (DI) system diagnostic table assumes the following conditions:
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The battery is fully charged.
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There is adequate fuel in the fuel tank.
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The fuel delivery system is functional.
Diagnostic Aids
Engine mechanical conditions may prevent the distributor from rotating. Inspect the following conditions if the distributor rotor does not rotate:
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A broken distributor drive shaft
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A worn or broken distributor drive gear
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A worn or broken camshaft timing chain and gears
An intermittent may be caused by a poor connection, rubbed through wire insulation, or a wire broken inside the insulation. Refer to Testing for
Intermittent Conditions and Poor Connections in Diagnostic Aids. If a repair is necessary, Refer to Wiring Repairs. See: Testing and
Inspection/Component Tests and General Diagnostics
Test Description
