DTC    P0351    Ignition Coil "A" Primary / Secondary Circuit

DTC    P0352    Ignition Coil "B" Primary / Secondary Circuit

DTC    P0353    Ignition Coil "C" Primary / Secondary Circuit

DTC    P0354    Ignition Coil "D" Primary / Secondary Circuit

for Preparation Click here


DESCRIPTION

HINT:
  1. These DTCs indicate malfunctions relating to the primary circuit.
  2. If DTC P0351 is set, check the No. 1 ignition coil assembly circuit.
  3. If DTC P0352 is set, check the No. 2 ignition coil assembly circuit.
  4. If DTC P0353 is set, check the No. 3 ignition coil assembly circuit.
  5. If DTC P0354 is set, check the No. 4 ignition coil assembly circuit.

A Direct Ignition System (DIS) is used on this vehicle.
The DIS is an ignition system in which each cylinder is ignited by it's own ignition coil assembly and spark plug. The secondary wiring of each ignition coil generates a powerful voltage which is applied directly to each spark plug. The spark passes from the center electrode of the spark plug to the ground electrode.
The ECM determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn, switches on and off the current to the primary coil. When the current to the primary coil is cut off, a powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back an ignition confirmation (IGF) signal to the ECM, for each cylinder ignition.

A217963E10


DTC No.
DTC Detection Conditions
Trouble Areas
P0351
P0352
P0353
P0354
No IGF signal to ECM while engine running (1 trip detection logic).
  1. Ignition system
  2. Open or short in IGF or IGT circuit (1 to 4) between ignition coil assembly and ECM
  3. No. 1 to No. 4 ignition coil assemblies
  4. ECM

  1. A205550E10
    Reference: Inspection using an oscilloscope.

    Standard:

    Tester Connection
    		Tool Setting
    		Condition
    		Specified Condition
    D27-108 (IGT1) - D27-104 (E1)
    		2 V/DIV., 20 ms./DIV.
    		Idling
    		The correct waveform is as shown
    D27-107 (IGT2) - D27-104 (E1)
    		2 V/DIV., 20 ms./DIV.
    		Idling
    		The correct waveform is as shown
    D27-106 (IGT3) - D27-104 (E1)
    		2 V/DIV., 20 ms./DIV.
    		Idling
    		The correct waveform is as shown
    D27-105 (IGT4) - D27-104 (E1)
    		2 V/DIV., 20 ms./DIV.
    		Idling
    		The correct waveform is as shown
    D27-23 (IGF1) - D27-104 (E1)
    		2 V/DIV., 20 ms./DIV.
    		Idling
    		The correct waveform is as shown

  2. While cranking or idling the engine, check the waveform between terminals IGT (1 to 4) and E1, and IGF1 and E1 of the ECM connector.

MONITOR DESCRIPTION


A212405E08

If the ECM does not receive any IGF signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and sets a DTC.

MONITOR STRATEGY


Required Sensors/Components (Main)
Igniter
Required Sensors/Components (Related)
Crankshaft position sensor
Frequency of Operation
Continuous

CONFIRMATION DRIVING PATTERN

  1. Put the engine in inspection mode (maintenance mode) (Click here).
  2. Start the engine and run it at idle for 10 seconds or more.

WIRING DIAGRAM


A249517E03


A231667E06


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

1.CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)


    A194110E63

  1. Disconnect the ignition coil assembly connectors.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D22-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    D21-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    D20-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    D19-4 (GND) - Body ground
    		Always
    		Below 1 Ω

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Ignition Coil Assembly)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)


    A194110E64

  1. Disconnect the ignition coil assembly connectors.

  1. Turn the power switch on (IG).

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D22-1 (+B) - D22-4 (GND)
    		Power switch on (IG)
    		11 to 14 V
    D21-1 (+B) - D21-4 (GND)
    		Power switch on (IG)
    		11 to 14 V
    D20-1 (+B) - D20-4 (GND)
    		Power switch on (IG)
    		11 to 14 V
    D19-1 (+B) - D19-4 (GND)
    		Power switch on (IG)
    		11 to 14 V

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Ignition Coil Assembly)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IG2 RELAY)
OK


3.CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

  1. Disconnect the ignition coil assembly connectors.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    D22-2 (IGF) - D27-23 (IGF1)
    		Always
    		Below 1 Ω
    D21-2 (IGF) - D27-23 (IGF1)
    		Always
    		Below 1 Ω
    D20-2 (IGF) - D27-23 (IGF1)
    		Always
    		Below 1 Ω
    D19-2 (IGF) - D27-23 (IGF1)
    		Always
    		Below 1 Ω
    D22-3 (IGT1) - D27-108 (IGT1)
    		Always
    		Below 1 Ω
    D21-3 (IGT2) - D27-107 (IGT2)
    		Always
    		Below 1 Ω
    D20-3 (IGT3) - D27-106 (IGT3)
    		Always
    		Below 1 Ω
    D19-3 (IGT4) - D27-105 (IGT4)
    		Always
    		Below 1 Ω
    D22-2 (IGF) or D27-23 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    D21-2 (IGF) or D27-23 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    D20-2 (IGF) or D27-23 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    D19-2 (IGF) or D27-23 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    D22-3 (IGT1) or D27-108 (IGT1) - Body ground
    		Always
    		10 kΩ or higher
    D21-3 (IGT2) or D27-107 (IGT2) - Body ground
    		Always
    		10 kΩ or higher
    D20-3 (IGT3) or D27-106 (IGT3) - Body ground
    		Always
    		10 kΩ or higher
    D19-3 (IGT4) or D27-105 (IGT4) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the tester on.

  1. Clear the DTCs (Click here).

  1. Shuffle arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).

    NOTICE:
    Do not shuffle the connectors.

  1. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    Same DTC output
    		A
    Different ignition coil DTC output
    		B



B
REPLACE IGNITION COIL ASSEMBLY (Click here)
A

REPLACE ECM (Click here)