P2302-IGNITION COIL 1 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION

For a complete wiring diagram Refer to Section 8W.

When Monitored:
Engine running and battery voltage greater than 10 volts.
Set Condition:
If PCM detects that the secondary ignition burn time is incorrect, too short, or not present, an error is detected. One Trip Fault. Three good trips to turn off the MIL.

(K19) COIL CONTROL 1 CIRCUIT SHORTED TO GROUND

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

Diagnostic Test

1. ACTIVE DTC

Ignition on, engine not running.
With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

Go To 2

Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2. (F342) ASD OUTPUT CIRCUIT

Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Ignition on, engine not running.
With a scan tool, actuate the ASD.
Using a 12-volt test light connected to ground, probe the (F342) ASD Output circuit in the Ignition Coil harness connector.

Does the test light illuminate brightly?

Yes

Go To 3

Repair the open or short to ground in the (F342) ASD Output circuit between the TIPM and Coil harness connector. Refer to the ASD diagnostic procedures for further assistance.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
NOTE: Stop All Actuations.

3. IGNITION COIL

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Using a 12-volt test light connected to a 12-volt source, probe the (K19) Coil Control 1 circuit in the Coil harness connector.
Crank the engine for 5 seconds while observing the test light.

What is the condition of the test light while cranking the engine?

Brightly blinking.

Replace the Ignition Coil.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

ON constantly.

Go To 4

OFF constantly.

Go To 5

4. (K19) COIL CONTROL 1 CIRCUIT SHORTED TO GROUND

Turn the ignition off.
Disconnect the C2 PCM harness connector.
Measure the resistance between ground and the (K19) Coil Control 1 circuit in the Coil harness connector.

Is the resistance below 100 ohms?

Yes

Repair the short to ground in the (K19) Coil Control 1 circuit.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 6

5. (K19) COIL CONTROL 1 CIRCUIT OPEN

Turn the ignition off.
Disconnect the C2 PCM harness connector.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Measure the resistance of the (K19) Coil Control 1 circuit from the Coil harness connector to the appropriate terminal of special tool #8815.

Is the resistance below 5.0 ohms?

Yes

Go To 6

Repair the open in the (K19) Coil Control 1 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

6. PCM

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

Were there any problems found?

Yes

Repair as necessary.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)