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Switching Circuit Resistance Test
- To check switching circuit for high resistance, connect voltmeter between solenoid operating winding terminal and ground. See Fig 1
.
NOTE:
If solenoid operates intermittently during test or engine cranks at low or irregular speed, insufficient voltage at solenoid operating winding terminal exists or solenoid is faulty.
- When switch contacts are closed, voltage reading should be slightly less than reading recorded in BATTERY TERMINAL UNDER LOAD TEST. A satisfactory reading indicates a negligible voltage drop in circuit, and fault is in the solenoid.
- If voltage reading is considerably lower than voltage reading in BATTERY TERMINAL UNDER LOAD TEST, check switching circuit for high resistance or faulty connections.
Courtesy of JAGUAR CARS, INC.