Sfi System - P0358

Brand:

Toyota

Model Name:

4Runner GRN210 215 UZN210 215

Manual:

Repair Manual

Section:

2Uz-Fe Engine Control System

Title:

Sfi System

  1. Description

  2. Monitor description

  3. Monitor strategy

  4. Typical enabling conditions

  5. Typical malfunction thresholds

  6. Component operating range

  7. Wiring diagram

  8. Inspection procedure

  9. Check spark plug and spark of misfiring cylinder

  10. Check harness and connector (ignition coil - ecm [igf signal terminal])

  11. Inspect ecm (igf1 and igf2 voltage)

  12. Check harness and connector (ignition coil - ecm [igt signal terminal])

  13. Inspect ecm (igt1, igt2, igt3, igt4, igt5, igt6, igt7 or igt8 voltage)

  14. Inspect ecm (igt1, igt2, igt3, igt4, igt5, igt6, igt7 or igt8 voltage)

  15. Inspect ignition coil with igniter (power source)

  16. Check harness and connector (ignition coil - ignition switch)

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

DTC P0357 Ignition Coil "G" Primary / Secondary Circuit

DTC P0358 Ignition Coil "H" Primary / Secondary Circuit


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DESCRIPTION

HINT:
  1. These DTCs indicate a malfunction related to a primary circuit.
  2. If DTC P0351 is displayed, check No. 1 ignition coil circuit.
  3. If DTC P0352 is displayed, check No. 2 ignition coil circuit.
  4. If DTC P0353 is displayed, check No. 3 ignition coil circuit.
  5. If DTC P0354 is displayed, check No. 4 ignition coil circuit.
  6. If DTC P0355 is displayed, check No. 5 ignition coil circuit.
  7. If DTC P0356 is displayed, check No. 6 ignition coil circuit.
  8. If DTC P0357 is displayed, check No. 7 ignition coil circuit.
  9. If DTC P0358 is displayed, check No. 8 ignition coil circuit.
A Direct Ignition System (DIS) is used on this vehicle.
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 timing and outputs the ignition signals (IGTs) for each cylinder. Using the IGTs, the ECM turns the power transistor inside the igniter on/off, which switches on/off current to the primary coil. When current to the primary coil is cut off, high voltage is generated in the secondary coil and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM cuts current to the primary coil, the igniter sends back ignition confirmation signals (IGFs) for each cylinder ignition to the ECM.

Ignition system 4Runner


DTC No.
DTC Detection Condition
Trouble Area
P0351
P0352
P0353
P0354
P0355
P0356
P0357
P0358
No IGF signal to ECM while engine is running
  1. Ignition system
  2. Open or short in IGF or IGT circuit (1 to 8) between ignition coil with igniter and ECM
  3. No. 1 to No. 8 ignition coil (primary ignition)
  4. ECM

  1. Reference: Inspect using an oscilloscope. 4Runner
  2. Reference: Inspect using an oscilloscope.
  3. While cranking or idling the engine, check the waveform between terminals IGT1 to IGT8 and E1, and IGF1 to IGF2 and E1 of the E6, E8 and E6 ECM connectors.
    Items
    		Contents
    Terminals
    1. CH1: IGT1, IGT2, IGT3, IGT4, IGT5,
      IGT6, IGT7, IGT8 - E1
    2. CH2: IGF1, IGF2 - E1
    Equipment Settings
    		2 V/DIV.
    20 msec./DIV.
    Condition
    		While the engine is cranking or idling

MONITOR DESCRIPTION


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. 4Runner

If the ECM does not receive an IGF after sending an IGT, it interprets this as a fault in the igniter and sets a DTC.

MONITOR STRATEGY


Related DTCs
P0351: Igniter (cylinder 1) malfunction
P0352: Igniter (cylinder 2) malfunction
P0353: Igniter (cylinder 3) malfunction
P0354: Igniter (cylinder 4) malfunction
P0355: Igniter (cylinder 5) malfunction
P0356: Igniter (cylinder 6) malfunction
P0357: Igniter (cylinder 7) malfunction
P0358: Igniter (cylinder 8) malfunction
Required Sensors/Components (Main)
Igniter
Required Sensors/Components (Related)
Crankshaft position sensor
Frequency of Operation
Continuous
Duration
0.256 seconds + 4 sparks
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


The monitor will run whenever these DTCs are not present
None
Either of the following condition is met:
Condition 1 or 2
1. Starter
OFF
2. Engine RPM
1,500 rpm or less
Either of the following condition is met:
Condition (a) or (b)
(a) All of the following conditions are met:
-
Engine RPM
500 rpm or less
Battery voltage
6 V or more
(b) All of the following conditions are met:
-
Engine RPM
More than 500 rpm
Battery voltage
10 V or more
Number of sparks after CPU is reset
5 sparks or more

TYPICAL MALFUNCTION THRESHOLDS


Ignition signal fail count
More than 2 times
Ignition signal fail count
When IGF does not return despite sending IGT

COMPONENT OPERATING RANGE


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

WIRING DIAGRAM


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. 4Runner


INSPECTION PROCEDURE

HINT:
  1. 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.
  2. If DTCs P0351, P0354, P0356 and P0357 are output simultaneously, IGF1 circuit may be open or short.
  3. If DTCs P0352, P0353, P0355 and P0358 are output simultaneously, IGF2 circuit may be open or short.
1.CHECK SPARK PLUG AND SPARK OF MISFIRING CYLINDER

  1. Check spark plug and spark of misfiring cylinder (Click here).



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OK
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2.CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM [IGF SIGNAL TERMINAL])
  1. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with igniter connectors. 4Runner

  2. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with igniter connectors.

  1. Disconnect the E4 ECM connector.

  1. Measure the resistance between the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    Ignition coil (I1-2) - IGF1 (E4-24)
    		Below 1 Ω
    Ignition coil (I2-2) - IGF2 (E4-25)
    Ignition coil (I3-2) - IGF2 (E4-25)
    Ignition coil (I4-2) - IGF1 (E4-24)
    Ignition coil (I5-2) - IGF2 (E4-25)
    Ignition coil (I6-2) - IGF1 (E4-24)
    Ignition coil (I7-2) - IGF1 (E4-24)
    Ignition coil (I8-2) - IGF2 (E4-25)
    Ignition coil (I1-2) or IGF1 (E4-24) - Body ground
    		10 kΩ or higher
    Ignition coil (I2-2) or IGF2 (E4-25) - Body ground
    Ignition coil (I3-2) or IGF2 (E4-25) - Body ground
    Ignition coil (I4-2) or IGF1 (E4-24) - Body ground
    Ignition coil (I5-2) or IGF2 (E4-25) - Body ground
    Ignition coil (I6-2) or IGF1 (E4-24) - Body ground
    Ignition coil (I7-2) or IGF1 (E4-24) - Body ground
    Ignition coil (I8-2) or IGF2 (E4-25) - Body ground

  1. Reconnect the ignition coil with igniter connectors.

  1. Reconnect the ECM connector.



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REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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3.INSPECT ECM (IGF1 AND IGF2 VOLTAGE)
  1. Disconnect the ignition coil with igniter connectors. 4Runner

  2. Disconnect the ignition coil with igniter connectors.

  1. Turn the ignition switch ON.

  1. Measure the voltage of the E4 and E6 ECM connectors.

    Standard voltage:
    Tester Connection
    		Specified Condition
    IGF1 (E4-24) - E1 (E6-1)
    		4.5 to 5.5 V
    IGF2 (E4-25) - E1 (E6-1)
    		4.5 to 5.5 V

  1. Reconnect the ignition coil with igniter connectors.



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REPLACE ECM
OK
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REPLACE IGNITION COIL WITH IGNITER

4.CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM [IGT SIGNAL TERMINAL])
  1. Disconnect the 11, 12, 13, 14, 15, 16, 17 or 18 ignition coil with igniter connectors. 4Runner

  2. Disconnect the 11, 12, 13, 14, 15, 16, 17 or 18 ignition coil with igniter connectors.

  1. Disconnect the E8 ECM connector.

  1. Measure the resistance between the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    IGT (I1-3) - IGT1 (E4-8)
    		Below 1 Ω
    IGT (I2-3) - IGT2 (E4-15)
    IGT (I3-3) - IGT3 (E4-11)
    IGT (I4-3) - IGT4 (E4-10)
    IGT (I5-3) - IGT5 (E4-13)
    IGT (I6-3) - IGT6 (E4-12)
    IGT (I7-3) - IGT7 (E4-14)
    IGT (I8-3) - IGT8 (E4-9)
    IGT (I1-3) or IGT1 (E4-8) - Body ground
    		10 kΩ or higher
    IGT (I2-3) or IGT2 (E4-15) - Body ground
    IGT (I3-3) or IGT3 (E4-11) - Body ground
    IGT (I4-3) or IGT4 (E4-10) - Body ground
    IGT (I5-3) or IGT5 (E4-13) - Body ground
    IGT (I6-3) or IGT6 (E4-12) - Body ground
    IGT (I7-3) or IGT7 (E4-14) - Body ground
    IGT (I8-3) or IGT8 (E4-9) - Body ground

  1. Reconnect the ignition coil with igniter connectors.

  1. Reconnect the ECM connector.



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REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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5.INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 OR IGT8 VOLTAGE)
  1. Measure the voltage of the E4 and E6 ECM connectors when the engine is cranked.Standard voltage:Tester ConnectionSpecified ConditionIGT1 (E4-8) - E1 (E6-1)0.1 to 4.5 VIGT2 (E4-15) - E1 (E6-1) IGT3 (E4-11) - E1 (E6-1) IGT4 (E4-10) - E1 (E6-1) IGT5 (E4-13) - E1 (E6-1) IGT6 (E4-12) - E1 (E6-1) IGT7 (E4-14) - E1 (E6-1) IGT8 (E4-9) - E1 (E6-1) 4Runner

  2. Measure the voltage of the E4 and E6 ECM connectors when the engine is cranked.

    Standard voltage:
    Tester Connection
    		Specified Condition
    IGT1 (E4-8) - E1 (E6-1)
    		0.1 to 4.5 V
    IGT2 (E4-15) - E1 (E6-1)
    IGT3 (E4-11) - E1 (E6-1)
    IGT4 (E4-10) - E1 (E6-1)
    IGT5 (E4-13) - E1 (E6-1)
    IGT6 (E4-12) - E1 (E6-1)
    IGT7 (E4-14) - E1 (E6-1)
    IGT8 (E4-9) - E1 (E6-1)


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REPLACE ECM
OK
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6.INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 OR IGT8 VOLTAGE)
  1. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with igniter connectors. 4Runner

  2. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with igniter connectors.

  1. Measure the voltage of the E4 and E6 ECM connectors when the engine is cranked.

    Standard voltage:
    Tester Connection
    		Specified Condition
    IGT1 (E4-8) - E1 (E6-1)
    		4.5 V or more
    IGT2 (E4-15) - E1 (E6-1)
    IGT3 (E4-11) - E1 (E6-1)
    IGT4 (E4-10) - E1 (E6-1)
    IGT5 (E4-13) - E1 (E6-1)
    IGT6 (E4-12) - E1 (E6-1)
    IGT7 (E4-14) - E1 (E6-1)
    IGT8 (E4-9) - E1 (E6-1)

  1. Reconnect the ignition coil with igniter connectors.



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REPLACE ECM
OK
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7.INSPECT IGNITION COIL WITH IGNITER (POWER SOURCE)
  1. Disconnect the I1, I2, I3, I4, I5, I6, I7 and I8 ignition coil with igniter connectors. 4Runner

  2. Disconnect the I1, I2, I3, I4, I5, I6, I7 and I8 ignition coil with igniter connectors.

  1. Turn the ignition switch ON or START.

  1. Measure the voltage of the wire harness side connector and body ground.

    Standard voltage:
    Tester Connection
    		Specified Condition
    +B (I1-1) - Body ground
    		9 to 14 V
    +B (I2-1) - Body ground
    +B (I3-1) - Body ground
    +B (I4-1) - Body ground
    +B (I5-1) - Body ground
    +B (I6-1) - Body ground
    +B (I7-1) - Body ground
    +B (I8-1) - Body ground

  1. Reconnect the ignition coil connectors.



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REPLACE IGNITION COIL
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8.CHECK HARNESS AND CONNECTOR (IGNITION COIL - IGNITION SWITCH)
  1. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with igniter connectors. 4Runner

  2. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with igniter connectors.

  1. Disconnect the I18 ignition switch connector.

  1. Measure the resistance between the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    Ignition coil (I1-1) - IG2 (I18-6)
    		Below 1 Ω
    Ignition coil (I2-1) - IG2 (I18-6)
    Ignition coil (I3-1) - IG2 (I18-6)
    Ignition coil (I4-1) - IG2 (I18-6)
    Ignition coil (I5-1) - IG2 (I18-6)
    Ignition coil (I6-1) - IG2 (I18-6)
    Ignition coil (I7-1) - IG2 (I18-6)
    Ignition coil (I8-1) - IG2 (I18-6)
    Ignition coil (I1-1) or IG2 (I18-6) - Body ground
    		10 kΩ or higher
    Ignition coil (I2-1) or IG2 (I18-6) - Body ground
    Ignition coil (I3-1) or IG2 (I18-6) - Body ground
    Ignition coil (I4-1) or IG2 (I18-6) - Body ground
    Ignition coil (I5-1) or IG2 (I18-6) - Body ground
    Ignition coil (I6-1) or IG2 (I18-6) - Body ground
    Ignition coil (I7-1) or IG2 (I18-6) - Body ground
    Ignition coil (I8-1) or IG2 (I18-6) - Body ground

  1. Reconnect the ignition switch connector.

  1. Reconnect the ignition coil with igniter connectors.



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REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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REPLACE IGNITION COIL