Circuit/System Testing

Ignition OFF, disconnect the harness connector at the K35 Ignition Coil Module.
Test for less than 5 Ω between the ground circuit terminal B and ground.
- If greater than the specified range, repair the ground circuit for an open/high resistance.
Ignition OFF and all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down, test for less than 5 Ω between the low reference circuit terminal C and ground.
- If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal A and ground.
- If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse F9 is open, test all components connected to the ignition voltage circuit and replace as necessary.
Engine running, observe the Ignition Coil 1-4 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not Run.
- If test status is Malfunction test for open or short to ground.
Engine running, observe the Ignition Coil 1-4 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.
- If test status is Malfunction test for open circuit.
Engine running, observe the Ignition Coil 1-4 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not Run.
- If test status is Malfunction test for short to voltage.
If all circuits test normal, test or replace the T8 K35 Ignition Coil Module.