Dtc P0351 Ignition Coil A Primary / Secondary Circuit

Engine Hybrid System. Corolla. Zre142 Aze141
2Az-Fe Engine Control. Corolla. Zre142 Aze141

DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

CONFIRMATION DRIVING PATTERN

WIRING DIAGRAM

INSPECTION PROCEDURE

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

INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM)

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

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 output, check the No. 1 ignition coil circuit.
  3. If DTC P0352 is output, check the No. 2 ignition coil circuit.
  4. If DTC P0353 is output, check the No. 3 ignition coil circuit.
  5. If DTC P0354 is output, check the No. 4 ignition coil circuit.
A direct ignition system is used on this vehicle.
The direct ignition system is an ignition system in which each cylinder is ignited by its own ignition coil 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 ignition coils of this system each have a built-in igniter.
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.

Corolla. Zre142 Aze141.2Az-Fe Engine Control.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit


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 IGF1 or IGT (1 to 4) circuit between ignition coil and ECM
  3. No. 1 to No. 4 ignition coils
  4. ECM

  1. Corolla. Zre142 Aze141.2Az-Fe Engine Control.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit
  2. Reference: Inspection using an oscilloscope.
  3. While idling the engine, check the waveform between terminals IGT (1 to 4) and E1, and IGF1 and E1 of the ECM connector.
    ECM Terminal Name
    		Between IGT (1 to 4) and E1
    Between IGF1 and E1
    Tester Range
    		2 V/DIV., 20 msec./DIV.
    Condition
    		Idling

MONITOR DESCRIPTION


Corolla. Zre142 Aze141.2Az-Fe Engine Control.Sfi System. Dtc P0351 Ignition Coil A Primary / Secondary Circuit

If the ECM does not receive any IGF1 signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and stores a DTC.

MONITOR STRATEGY


Related DTCs
P0351: Igniter (cylinder 1) range check / functional check
P0352: Igniter (cylinder 2) range check / functional check
P0353: Igniter (cylinder 3) range check / functional check
P0354: Igniter (cylinder 4) range check / functional check
Required Sensors/Components (Main)
Igniter
Required Sensors/Components (Related)
Crankshaft position sensor
Frequency of Operation
Continuous
Duration
0.256 seconds
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


Monitor runs whenever following DTCs are not present
None
Either of the following conditions A or B is met
-
A. Engine speed
1500 rpm or less
B. Starter
Off
Either of the following conditions C or D met
-
C. Both of the following conditions (a) and (b) are met
-
(a) Engine speed
500 rpm or less
(b) Battery voltage
6 V or more
D. All of the following conditions (c), (d) and (e) are met
-
(c) Engine speed
More than 500 rpm
(d) Battery voltage
10 V or more
(e) Number of sparks after CPU reset
5 sparks or more

TYPICAL MALFUNCTION THRESHOLDS


IGF signal
ECM does not receive any IGF signal despite ECM sending IGT signal to igniter

COMPONENT OPERATING RANGE


IGF signal
Igniter transmits IGF signal when it receives IGT signal from ECM

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the Techstream on.
  6. Start the engine.
  7. Idle the engine for 10 seconds or more [A].
  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
  9. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  11. Input the DTC: P0351, P0352, P0353 or P0354.
  12. Check the DTC judgment result.

    Techstream Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform steps [A] and [B] again.
  13. If no pending DTC is output, perform a universal trip and check for permanent DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).
    HINT:
    1. If a permanent DTC is output, the system is malfunctioning.
    2. If no permanent DTC is output, the system is normal.

WIRING DIAGRAM


Corolla. Zre142 Aze141.2Az-Fe Engine Control.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 Techstream. 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)

  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
    B26-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    B27-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    B28-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    B29-4 (GND) - Body ground
    		Always
    		Below 1 Ω

  1. Reconnect the ignition coil assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)


    Corolla. Zre142 Aze141.2Az-Fe Engine Control.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
    		Condition
    		Specified Condition
    B26-1 (+B) - B26-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    B27-1 (+B) - B27-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    B28-1 (+B) - B28-4 (GND)
    		Ignition switch ON
    		11 to 14 V
    B29-1 (+B) - B29-4 (GND)
    		Ignition switch ON
    		11 to 14 V

  1. Reconnect the ignition coil assembly connectors.



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 (Check for Open):

    Tester Connection
    		Condition
    		Specified Condition
    B26-2 (IGF) - B31-81 (IGF1)
    		Always
    		Below 1 Ω
    B27-2 (IGF) - B31-81 (IGF1)
    		Always
    		Below 1 Ω
    B28-2 (IGF) - B31-81 (IGF1)
    		Always
    		Below 1 Ω
    B29-2 (IGF) - B31-81 (IGF1)
    		Always
    		Below 1 Ω
    B26-3 (IGT1) - B31-85 (IGT1)
    		Always
    		Below 1 Ω
    B27-3 (IGT2) - B31-84 (IGT2)
    		Always
    		Below 1 Ω
    B28-3 (IGT3) - B31-83 (IGT3)
    		Always
    		Below 1 Ω
    B29-3 (IGT4) - B31-82 (IGT4)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):

    Tester Connection
    		Condition
    		Specified Condition
    B26-2 (IGF) or B31-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    B27-2 (IGF) or B31-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    B28-2 (IGF) or B31-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    B29-2 (IGF) or B31-81 (IGF1) - Body ground
    		Always
    		10 kΩ or higher
    B26-3 (IGT1) or B31-85 (IGT1) - Body ground
    		Always
    		10 kΩ or higher
    B27-3 (IGT2) or B31-84 (IGT2) - Body ground
    		Always
    		10 kΩ or higher
    B28-3 (IGT3) or B31-83 (IGT3) - Body ground
    		Always
    		10 kΩ or higher
    B29-3 (IGT4) or B31-82 (IGT4) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the ECM connector.

  1. Reconnect the ignition coil assembly connectors.



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


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

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).

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

    NOTICE:
    Do not shuffle the connectors.

  1. Perform a simulation test.

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

  1. Read DTCs.

    Result:

    Result
    		Proceed to
    Same DTC is output
    		A
    Different ignition coil DTC is output
    		B


B
REPLACE IGNITION COIL ASSEMBLY (COROLLA_ZRE142 RM000001QVL02UX.html)
A

REPLACE ECM (COROLLA_ZRE142 RM000002WT402ZX.html)