P0356

A : Ignition Coils P0356

G92415t1 : CHECK COIL FUNCTION BY SUBSTITUTION
1. Swap suspect coil for known good unit.
2. CLEAR the DTC. TEST the system for normal operation.

- Does the same DTC reoccur? The DTC will indicate if the same cylinder is misfiring.

-> Yes

-> No
CLEAR the DTC. TEST the system for normal operation.

G92415t2 : CHECK THE IGNITION COIL SUPPLY VOLTAGE CIRCUIT
1. Disconnect the relevant A bank ignition coil electrical connector(s).
2. Turn the ignition switch to the ON position.
3. Measure the voltage between:
4. Disconnect the relevant B bank ignition coil electrical connector(s).
5. Measure the voltage between:

- Is the voltage greater than 10.5 Volts?

-> Yes

-> No
REPAIR the relevant ignition coil supply voltage circuit. CLEAR the DTCs. TEST the system for normal operation.

G92415t3 : CHECK THE IGNITION COIL GROUND CIRCUIT
1. Switch the ignition to the OFF position.
2. Disconnect the relevant A bank ignition coil electrical connector(s).
3. Measure the resistance between:
4. Disconnect the relevant B bank ignition coil electrical connector(s).
5. Measure the resistance between:

- Is the resistance less than 5 ohms?

-> Yes

-> No
REPAIR the relevant ignition coil ground circuit. CLEAR the DTCs.
TEST the system for normal operation.

G92415t4 : CHECK THE CONTINUITY OF THE IGNITION COIL TRIGGER SUPPLY CIRCUIT
1. Disconnect the ECM electrical connector EN016.
2. Check the continuity of the ignition coil trigger supply circuit between the relevant ignition coil electrical connector(s) and the ECM electrical connector:

- Is the resistance less than 5 ohms?

-> Yes

-> No
REPAIR the ignition coil trigger supply circuit between the relevant ignition coil electrical connector(s) and the ECM electrical connector. CLEAR the DTCs. TEST the system for normal operation.

G92415t5 : CHECK THE CONTINUITY BETWEEN THE IGNITION COIL AND THE ECM
1. Check the continuity of the ignition coil diagnostic signal circuit, between the ignition coil electrical connector(s) and the ECM electrical connector:

- Is the resistance less than 5 Ohms?

-> Yes
INSTALL a new ECM. Before replacing a ECM, contact Dealer technical support. CLEAR the DTCs. TEST the system for normal operation.

-> No
REPAIR the circuit between the ignition coil electrical connector(s) and the ECM electrical connector. CLEAR the DTCs. TEST the system for normal operation.