C 1500 Truck 2WD V8-5.3L VIN T (1999)
Ignition Coil: Testing and Inspection
Ignition Coil(s) Not Operating Properly (Delphi Coils)
TOOLS REQUIRED
J 39200 Digital Multimeter
1. Turn off the ignition switch.
2. Disconnect the spark plug wire from the ignition coil.
3. Disconnect the 4-pin ignition coil connector from the coil.
IMPORTANT: Do not insert the J-39200 probe into the ignition coil connector. The terminals could be damaged, resulting in intermittent operation.
Only make contact with the front edge of the terminals.
4. Use a J 39200 Digital Multimeter to measure the resistance of the secondary winding in the ignition coil (1).
5. Set the J 39200 Digital Multimeter on the high scale.
6. Connect the J 39200 Digital Multimeter between pin A(2) in the 4-pin connector and the metal tower contact in the coil (3).
If the reading is not 3K-7K ohm at room temperature, replace the coil. Refer to Ignition Coil Replacement (4.8L, 5.3L, 6.0L).
