Troubleshooting
DTC P0357 IGNITION COIL "G" PRIMARY/SECONDARY CIRCUITCIRCUIT DESCRIPTION
DTC Detection Condition:
A Direct Ignition System (DIS) has been adopted. The DIS improves the ignition timing accuracy, reduces high-voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor. The DIS is a 1-cylinder ignition system which ignites one cylinder with one ignition coil. In the 1-cylinder ignition system, the one spark plug is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes from the center electrode to the ground electrode.
The ECM determines the ignition the timing and outputs the ignition signals (IGT) for each cylinder. Based on the IGT signals, the power transistors in the igniter cut off the current to the primary coil in the ignition coil is supplied to the spark plug that is connected to the end of the secondary coil. At the same time, the igniter also sends an ignition confirmation signal (IGF) as a fail-safe measure to the ECM.
Wiring Diagram:
Step 1:
Step 2 - 3:
Step 4:
Step 5:
Step 6 - 7:
Step 8:
INSPECTION PROCEDURE
HINT:
- If DTC P0351 is displayed, check No.1 ignition coil with igniter circuit.
- If DTC P0352 is displayed, check No.2 ignition coil with igniter circuit.
- If DTC P0353 is displayed, check No.3 ignition coil with igniter circuit.
- If DTC P0354 is displayed, check No.4 ignition coil with igniter circuit.
- If DTC P0355 is displayed, check No.5 ignition coil with igniter circuit.
- If DTC P0356 is displayed, check No.6 ignition coil with igniter circuit.
- If DTC P0357 is displayed, check No.7 ignition coil with igniter circuit.
- If DTC P0358 is displayed, check No.8 ignition coil with igniter circuit.
- If DTC P0351 and P0357 are output simultaneously, IF1L circuit may be open or short.
- It DTC P0354 and P0356 are output simultaneously, IF1R circuit may be open or short.
- If DTC P0353 and P0355 are output simultaneously, IF2L circuit may be open or short.
- If DTC P0352 and P0358 are output simultaneously, IF2R circuit may be open or short.
- Read freeze frame data using hand-held tester, as freeze frame data records the engine condition when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. a the time of the malfunction.