P0357 - Ignition Coil G Primary/Secondary Circuit

Powertrain DTC Charts and Descriptions 4-63

Diagnostic Trouble Code (DTC) Charts and Descriptions

P0357 - Ignition Coil G Primary/Secondary Circuit (Continued)

Diagnostic Aids: The DTC P0357 only sets for a coil primary circuit failure. A secondary ignition coil or spark plug failure does not

set the DTC P0357. The DTC P0307 does not set for a coil primary circuit malfunction. The DTC P0357 may set with or without the DTC P0307, however the DTC P0357 sets first. When this DTC is set, the PCM enters failure mode effects management (FMEM) which shuts down the injector for the associated cylinder in order to protect the catalytic converter. This is normal operation, do not attempt to diagnose the injector with this DTC present. If a primary coil is damaged due to a harness short to ground the PCM will not be damaged. Do not replace the PCM without verifying the coil driver functionality. Use the 12 volt non-powered test lamp to verify VPWR voltage at the ignition coil harness connector. Check the coil driver circuit for open, short to voltage, or short to ground.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test JF.

P0358 - Ignition Coil H Primary/Secondary Circuit

Description: This DTC sets when the PCM does not receive a valid ignition diagnostic monitor (IDM) pulse signal from the

ignition module PCM.

Possible Causes: • VPWR circuit open

• VPWR circuit short to ground

• COP8 circuit open

• COP8 circuit short to voltage

• COP8 circuit short to ground

• Damaged COP

Diagnostic Aids: The DTC P0358 only sets for a coil primary circuit failure. A secondary ignition coil or spark plug failure does not

set the DTC P0358. The DTC P0308 does not set for a coil primary circuit malfunction. The DTC P0358 may set with or without the DTC P0308, however the DTC P0358 sets first. When this DTC is set, the PCM enters failure mode effects management (FMEM) which shuts down the injector for the associated cylinder in order to protect the catalytic converter. This is normal operation, do not attempt to diagnose the injector with this DTC present. If a primary coil is damaged due to a harness short to ground the PCM will not be damaged. Do not replace the PCM without verifying the coil driver functionality. Use the 12 volt non-powered test lamp to verify VPWR voltage at the ignition coil harness connector. Check the coil driver circuit for open, short to voltage, or short to ground.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test JF.

P0359 - Ignition Coil I Primary/Secondary Circuit

Description: This DTC sets when the PCM does not receive a valid ignition diagnostic monitor (IDM) pulse signal from the

ignition module PCM.

Possible Causes: • VPWR circuit open

• VPWR circuit short to ground

• COP9 circuit open

• COP9 circuit short to voltage

• COP9 circuit short to ground

• Damaged COP

Diagnostic Aids: The DTC P0359 only sets for a coil primary circuit failure. A secondary ignition coil or spark plug failure does not

set the DTC P0359. The DTC P0309 does not set for a coil primary circuit malfunction. The DTC P0359 may set with or without the DTC P0309, however the DTC P0359 sets first. When this DTC is set, the PCM enters failure mode effects management (FMEM) which shuts down the injector for the associated cylinder in order to protect the catalytic converter. This is normal operation, do not attempt to diagnose the injector with this DTC present. If a primary coil is damaged due to a harness short to ground the PCM will not be damaged. Do not replace the PCM without verifying the coil driver functionality. Use the 12 volt non-powered test lamp to verify VPWR voltage at the ignition coil harness connector. Check the coil driver circuit for open, short to voltage, or short to ground.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test JF.

2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015