• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | High Resistance | Open | Short to Voltage |
---|---|---|---|---|
Ignition Coil 1 Control Circuit | P2300 | P0351 | P0351 | P2301 |
Ignition Coil 2 Control Circuit | P2303 | P0352 | P0352 | P2304 |
Ignition Coil 3 Control Circuit | P2306 | P0353 | P0353 | P2307 |
Ignition Coil 4 Control Circuit | P2309 | P0354 | P0354 | P2310 |
The ignition system uses individual ignition coil/module assemblies for each cylinder. The engine control module (ECM) controls the individual coils by transmitting timing pulses on the ignition control (IC) circuit of each ignition coil/module to enable a spark event. When the engine is running the ECM monitors each IC circuit for improper voltage levels. Each ignition coil/module has the following circuits:
• | Ignition voltage |
• | Ground |
• | IC |
• | Low reference |
• | The engine speed is less than 6,000 RPM. |
• | The ignition 1 voltage signal is between 9-18 volts. |
• | DTCs P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310 run continuously when the above conditions are met. |
• | The ECM detects a short to ground on the circuit or the ignition coil/module for greater than 4 seconds continuously or 50 seconds cumulative. |
OR |
• | The ECM detects a short to voltage on the circuit or the ignition coil/module for greater than 4 seconds continuously or 50 seconds cumulative. |
DTCs P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310 are Type B DTCs.
DTCs P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310 are Type B DTCs.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
⇒ | If a fault is found, repair the circuit as needed. |
⇒ | If the DTC or the misfire transfers with the suspect ignition/coil module, replace as needed. |
⇒ | If the DTC or the misfire does not transfer with the suspect ignition/coil module, replace the ECM. |
• | Control Module References for ECM replacement, setup, and programming |
If the customer concern was a flashing MIL, then perform the following procedure: