Dtc P0351 Ignition Coil A Primary / Secondary Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ OUTPUT DTC

PERFORM SIMULATION TEST

INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

INSPECT IGNITION COIL ASSEMBLY (GROUND CIRCUIT)

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


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 is used on this vehicle.
The direct ignition system is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil assembly and a 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. Spark of the spark plugs passes 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, the igniter sends back an ignition confirmation signal (IGF) to the ECM, for each cylinder ignition.

Camry. Acv40 Gsv40.2Az-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
No IGF signal to ECM while engine running
(1 trip detection logic)
  1. Ignition system
  2. Open or short in IGF1 or IGT circuit (1 to 4) between ignition coil assembly and ECM
  3. No. 1 to No. 4 ignition coil assemblies
  4. ECM

  1. Camry. Acv40 Gsv40.2Az-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 4) and E1, and IGF1 and E1 of the ECM connectors.
    HINT:
    The wavelength becomes shorter as the engine speed increases.
    Item
    		Content
    ECM Terminal Names
    		(1) Between IGT (1 to 4) and E1
    (2) Between IGF1 and E1
    Tester Range
    		2 V/DIV., 20 ms./DIV.
    Condition
    		Idling with warm engine

WIRING DIAGRAM


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


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


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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
1.READ OUTPUT DTC

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

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

  1. Read the DTCs.


Result:

Result
Proceed to
One of DTCs P0351, P0352, P0353 and P0354 is output.
A
Some of DTCs P0351, P0352, P0353 and P0354 are output.
B


B
Go to step 5
A


2.PERFORM SIMULATION TEST

  1. Clear the DTC (CAMRY_ACV40 RM000000PDK0LEX.html).

  1. Change the arrangement of the ignition coil assemblies.

    NOTICE:
    Do not change the location of the connectors.

  1. Perform a simulation test.

    Result:

    Result
    		Proceed to
    Same DTCs are output (same as DTCs that were cleared)
    		A
    Other DTCs are output
    		B


B
REPLACE IGNITION COIL ASSEMBLY (CAMRY_ACV40 RM000001QVM02HX.html)
A


3.INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)


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

  1. Disconnect the ignition coil assembly connectors.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C11-1 (+B) - C11-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    C12-1 (+B) - C12-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    C13-1 (+B) - C13-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    C14-1 (+B) - C14-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *1
    		Front view of wire harness connector
    (to Ignition Coil Assembly)

  1. Reconnect the ignition coil assembly connectors.



NG
Go to step 5
OK


4.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 (Check for Open):

    Tester Connection
    		Condition
    		Specified Condition
    C11-3 (IGT1) - C24-85 (IGT1)
    		Always
    		Below 1 Ω
    C13-3 (IGT2) - C24-84 (IGT2)
    		Always
    		Below 1 Ω
    C12-3 (IGT3) - C24-83 (IGT3)
    		Always
    		Below 1 Ω
    C14-3 (IGT4) - C24-82 (IGT4)
    		Always
    		Below 1 Ω
    C11-2 (IGF) - C24-81 (IGF1)
    		Always
    		Below 1 Ω
    C12-2 (IGF) - C24-81 (IGF1)
    		Always
    		Below 1 Ω
    C13-2 (IGF) - C24-81 (IGF1)
    		Always
    		Below 1 Ω
    C14-2 (IGF) - C24-81 (IGF1)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):

    Tester Connection
    		Condition
    		Specified Condition
    C11-3 (IGT1) or C24-85 (IGT1) - Body ground
    		Always
    		10 kΩ or higher
    C13-3 (IGT2) or C24-84 (IGT2) - Body ground
    		Always
    		10 kΩ or higher
    C12-3 (IGT3) or C24-83 (IGT3) - Body ground
    		Always
    		10 kΩ or higher
    C14-3 (IGT4) or C24-82 (IGT4) - Body ground
    		Always
    		10 kΩ or higher
    C11-2 (IGF) or C24-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    C12-2 (IGF) or C24-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    C13-2 (IGF) or C24-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    C14-2 (IGF) or C24-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the ignition coil assembly connectors.

  1. Reconnect the ECM connector.



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

REPLACE ECM (CAMRY_ACV40 RM0000017UO02YX.html)

5.INSPECT IGNITION COIL ASSEMBLY (GROUND CIRCUIT)


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

  1. Disconnect the ignition coil assembly connectors.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C11-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    C12-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    C13-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    C14-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    Text in Illustration
    *1
    		Front view of wire harness connector
    (to Ignition Coil Assembly)

  1. Reconnect the ignition coil assembly connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND)
OK

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