Dtc P0351 Ignition Coil A Primary / Secondary Circuit

Engine. Camry. Acv40 Gsv40
2Gr-Fe Engine Control System. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGT SIGNAL TERMINAL))

PERFORM SIMULATION TEST

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

DTC P0355 Ignition Coil "E" Primary / Secondary Circuit

DTC P0356 Ignition Coil "F" Primary / Secondary Circuit


DESCRIPTION

HINT:
  1. These DTCs indicate malfunctions relating to the primary circuit.
  2. If DTC P0351 is set, check the No. 1 ignition coil circuit.
  3. If DTC P0352 is set, check the No. 2 ignition coil circuit.
  4. If DTC P0353 is set, check the No. 3 ignition coil circuit.
  5. If DTC P0354 is set, check the No. 4 ignition coil circuit.
  6. If DTC P0355 is set, check the No. 5 ignition coil circuit.
  7. If DTC P0356 is set, check the No. 6 ignition coil circuit.
A Direct Ignition System (DIS) is used on this vehicle.
The DIS is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil and spark plug is connected to the end of each secondary wiring. A powerful voltage, generated in the secondary wiring, is applied directly to each spark plug. The sparks of the spark plugs pass from the center electrode to the ground electrodes.
The ECM determines the ignition timing and transmits the ignition signals (IGT) 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 off, the igniter sends back an ignition confirmation signal (IGF) to the ECM, for each cylinder ignition.

Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit


DTC No.
DTC Detection Condition
Trouble Area
P0351
P0352
P0353
P0354
P0355
P0356
No IGF signal to ECM while engine is running
(1 trip detection logic)
  1. Ignition system
  2. Open or short in IGF1 or IGT (1 to 6) circuit between ignition coil and ECM
  3. No. 1 to No. 6 ignition coils
  4. ECM

  1. Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit
    Reference: Inspection using an oscilloscope.
  2. While cranking or idling the engine, check the waveform between terminals IGT (1 to 6) and E1, and IGF1 and E1 of the ECM connector.
    Item
    		Content
    Terminals
    		CH1: IGT1, IGT2, IGT3, IGT4, IGT5, IGT6 - E1
    CH2: IGF1 - E1
    Equipment Settings
    		2 V/DIV.
    20 ms./DIV.
    Conditions
    		Cranking or idling

WIRING DIAGRAM


Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit


Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit


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 (CAMRY_ACV40 RM000000PDS01FX.html).
1.INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit

  1. Disconnect the C11, C13, C12, C14, C38 or C39 ignition coil connector.

  1. Turn the engine switch on (IG).

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

    Standard voltage:
    Tester Connection
    		Specified Condition
    C11-1 - Body ground
    		11 to 14 V
    C13-1 - Body ground
    		11 to 14 V
    C12-1 - Body ground
    		11 to 14 V
    C14-1 - Body ground
    		11 to 14 V
    C38-1 - Body ground
    		11 to 14 V
    C39-1 - Body ground
    		11 to 14 V

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    C11-4 - Body ground
    		Below 1 Ω
    C13-4 - Body ground
    		Below 1 Ω
    C12-4 - Body ground
    		Below 1 Ω
    C14-4 - Body ground
    		Below 1 Ω
    C38-4 - Body ground
    		Below 1 Ω
    C39-4 - Body ground
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGT SIGNAL TERMINAL))


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit

  1. Disconnect the C11, C13, C12, C14, C38 or C39 ignition coil connector.

  1. Disconnect the ECM C58 (RHD) or C55 (LHD) connector.

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

    Standard resistance (Check for open):
    RHD:
    Tester Connection
    		Specified Condition
    IGT1 (C11-3) - IGT1 (C58-40)
    		Below 1 Ω
    IGT2 (C13-3) - IGT2 (C58-39)
    		Below 1 Ω
    IGT3 (C12-3) - IGT3 (C58-38)
    		Below 1 Ω
    IGT4 (C14-3) - IGT4 (C58-37)
    		Below 1 Ω
    IGT5 (C38-3) - IGT5 (C58-36)
    		Below 1 Ω
    IGT6 (C39-3) - IGT6 (C58-35)
    		Below 1 Ω
    LHD:
    Tester Connection
    		Specified Condition
    IGT1 (C11-3) - IGT1 (C55-40)
    		Below 1 Ω
    IGT2 (C13-3) - IGT2 (C55-39)
    		Below 1 Ω
    IGT3 (C12-3) - IGT3 (C55-38)
    		Below 1 Ω
    IGT4 (C14-3) - IGT4 (C55-37)
    		Below 1 Ω
    IGT5 (C38-3) - IGT5 (C55-36)
    		Below 1 Ω
    IGT6 (C39-3) - IGT6 (C55-35)
    		Below 1 Ω

    Standard resistance (Check for short):
    RHD:
    Tester Connection
    		Specified Condition
    IGT1 (C11-3) or IGT1 (C58-40) - Body ground
    		10 kΩ or higher
    IGT2 (C13-3) or IGT2 (C58-39) - Body ground
    		10 kΩ or higher
    IGT3 (C12-3) or IGT3 (C58-38) - Body ground
    		10 kΩ or higher
    IGT4 (C14-3) or IGT4 (C58-37) - Body ground
    		10 kΩ or higher
    IGT5 (C38-3) or IGT5 (C58-36) - Body ground
    		10 kΩ or higher
    IGT6 (C39-3) or IGT6 (C58-35) - Body ground
    		10 kΩ or higher
    LHD:
    Tester Connection
    		Specified Condition
    IGT1 (C11-3) or IGT1 (C55-40) - Body ground
    		10 kΩ or higher
    IGT2 (C13-3) or IGT2 (C55-39) - Body ground
    		10 kΩ or higher
    IGT3 (C12-3) or IGT3 (C55-38) - Body ground
    		10 kΩ or higher
    IGT4 (C14-3) or IGT4 (C55-37) - Body ground
    		10 kΩ or higher
    IGT5 (C38-3) or IGT5 (C55-36) - Body ground
    		10 kΩ or higher
    IGT6 (C39-3) or IGT6 (C55-35) - Body ground
    		10 kΩ or higher

    Standard resistance (Check for open):
    RHD:
    Tester Connection
    		Specified Condition
    IGF (C11-2) - IGF1 (C58-106)
    		Below 1 Ω
    IGF (C13-2) - IGF1 (C58-106)
    		Below 1 Ω
    IGF (C12-2) - IGF1 (C58-106)
    		Below 1 Ω
    IGF (C14-2) - IGF1 (C58-106)
    		Below 1 Ω
    IGF (C38-2) - IGF1 (C58-106)
    		Below 1 Ω
    IGF (C39-2) - IGF1 (C58-106)
    		Below 1 Ω
    LHD:
    Tester Connection
    		Specified Condition
    IGF (C11-2) - IGF1 (C55-106)
    		Below 1 Ω
    IGF (C13-2) - IGF1 (C55-106)
    		Below 1 Ω
    IGF (C12-2) - IGF1 (C55-106)
    		Below 1 Ω
    IGF (C14-2) - IGF1 (C55-106)
    		Below 1 Ω
    IGF (C38-2) - IGF1 (C55-106)
    		Below 1 Ω
    IGF (C39-2) - IGF1 (C55-106)
    		Below 1 Ω

    Standard resistance (Check for short):
    RHD:
    Tester Connection
    		Specified Condition
    IGF (C11-2) or IGF1 (C58-106) - Body ground
    		10 kΩ or higher
    IGF (C13-2) or IGF1 (C58-106) - Body ground
    		10 kΩ or higher
    IGF (C12-2) or IGF1 (C58-106) - Body ground
    		10 kΩ or higher
    IGF (C14-2) or IGF1 (C58-106) - Body ground
    		10 kΩ or higher
    IGF (C38-2) or IGF1 (C58-106) - Body ground
    		10 kΩ or higher
    IGF (C39-2) or IGF1 (C58-106) - Body ground
    		10 kΩ or higher
    LHD:
    Tester Connection
    		Specified Condition
    IGF (C11-2) or IGF1 (C55-106) - Body ground
    		10 kΩ or higher
    IGF (C13-2) or IGF1 (C55-106) - Body ground
    		10 kΩ or higher
    IGF (C12-2) or IGF1 (C55-106) - Body ground
    		10 kΩ or higher
    IGF (C14-2) or IGF1 (C55-106) - Body ground
    		10 kΩ or higher
    IGF (C38-2) or IGF1 (C55-106) - Body ground
    		10 kΩ or higher
    IGF (C39-2) or IGF1 (C55-106) - Body ground
    		10 kΩ or higher

  1. Reconnect the ignition coil connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.PERFORM SIMULATION TEST

  1. Clear the DTC(s) (CAMRY_ACV40 RM000000PDK0MSX.html).

  1. Change the arrangement of the ignition coils (with igniters).

    NOTICE:
    Do not change the location of the connectors.

  1. Perform a simulation test.

    Result:

    Display (DTC Output)
    		Proceed to
    Same DTCs (that have been erased)
    		A
    Other DTCs
    		B


B
REPLACE IGNITION COIL ASSEMBLY (CAMRY_ACV40 RM000001EFJ022X.html)
A

REPLACE ECM (CAMRY_ACV40 RM0000022NT01EX.html)