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: Wiring Diagram

Fig 1: Identifying SFI System Wiring Diagram (1 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Identifying SFI System Wiring Diagram (2 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Identifying SFI System Wiring Diagram (3 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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.
• These DTCs indicate a malfunction related to a primary circuit.
• If DTC P0351 is displayed, check No. 1 ignition coil with igniter circuit.
• If DTC P0352 is displayed, check No. 2 ignition coil with igniter circuit.
• If DTC P0353 is displayed, check No. 3 ignition coil with igniter circuit.
• If DTC P0354 is displayed, check No. 4 ignition coil with igniter circuit.
• If DTC P0355 is displayed, check No. 5 ignition coil with igniter circuit.
• If DTC P0356 is displayed, check No. 6 ignition coil with igniter circuit.
• If DTC P0357 is displayed, check No. 7 ignition coil with igniter circuit.
• If DTC P0358 is displayed, check No. 8 ignition coil with igniter circuit.

1. INSPECT SPARK PLUG 
   1. Remove the engine cover.
   2. Remove the ignition coil and the spark plug of the misfiring cylinder.
   3. Check the electrode for carbon deposits.
   4. Measure the spark plug's electrode gap.
      Fig 4: Measuring Spark Plug'S Electrode Gap

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Electrode gap: 1.0 to 1.3 mm (0.039 to 0.051 in.) Recommended spark plug 

      RECOMMENDED SPARK PLUG SPECIFICATIONS
      
      

      Manufacturer	Spark Plug Type
      DENSO	SK20R11
      NGK	IFR6A11

      NOTE: If the electrode gap is larger than the standard, replace the spark plug. Do not adjust the electrode gap.

   NG : REPLACE SPARK PLUG 

   OK : GO TO NEXT STEP. 

2. CHECK SPARK AND IGNITION 
   1. Disconnect the injector connectors to prevent the engine from starting.
   2. Install the spark plug to the ignition coil.
   3. Attach the spark plug to the cylinder head cover.
   4. Crank the engine within 2 seconds and check the spark.
      Fig 5: Identifying Spark Plug To Ignition Coil

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Spark occurs. 

   NG : Go to step   5 

   OK : GO TO NEXT STEP. 

3. CHECK WIRE HARNESS (IGNITION COIL - ECM) 
   1. Disconnect the E11, E14, E17, E20, E28, E30, E35 and E37 ignition coil connectors.
   2. Disconnect the E6 ECM connector.
   3. Measure the resistance of the wire harness side connectors.
      Fig 6: Identifying E6 ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E11-2 (IGF1) - E6-7 (IGF1)	Below 1 Ω
      E37-2 (IGF2) - E6-6 (IGF2)	Below 1 Ω
      E14-2 (IGF2) - E6-6 (IGF2)	Below 1 Ω
      E35-2 (IGF1) - E6-7 (IGF1)	Below 1 Ω
      E17-2 (IGF2) - E6-6 (IGF2)	Below 1 Ω
      E30-2 (IGF1) - E6-7 (IGF1)	Below 1 Ω
      E20-2 (IGF1) - E6-7 (IGF1)	Below 1 Ω
      E28-2 (IGF2) - E6-6 (IGF2)	Below 1 Ω
      E11-2 (IGF1) or E6-7 (IGF1) - Body ground	10 kΩ or higher
      E37-2 (IGF2) or E6-6 (IGF2) - Body ground	10 kΩ or higher
      E14-2 (IGF2) or E6-6 (IGF2) - Body ground	10 kΩ or higher
      E35-2 (IGF1) or E6-7 (IGF1) - Body ground	10 kΩ or higher
      E17-2 (IGF2) or E6-6 (IGF2) - Body ground	10 kΩ or higher
      E30-2 (IGF1) or E6-7 (IGF1) - Body ground	10 kΩ or higher
      E20-2 (IGF1) or E6-7 (IGF1) - Body ground	10 kΩ or higher
      E28-2 (IGF2) or E6-6 (IGF2) - Body ground	10 kΩ or higher

   NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK : GO TO NEXT STEP. 

4. CHECK ECM (IGF1, IGF2, VOLTAGE) 
   1. Disconnect the E11, E14, E17, E20, E28, E30, E35 and E37 ignition coil connectors.
   2. Turn the engine switch on (IG).
   3. Measure the voltage of the ECM connector.
      Fig 7: Measuring Voltage Of ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E6-7 (IGF1) - E6-7 (E1)	4.5 to 5.5 V
      E6-6 (IGF2) - E6-7 (E1)	4.5 to 5.5 V

   NG : REPLACE ECM 

   OK : GO TO NEXT STEP. 

5. CHECK WIRE HARNESS (IGNITION COIL - ECM) 
   1. Disconnect the E11, E14, E17, E20, E28, E30, E35 and E37 ignition coil connectors.
   2. Disconnect the E6 and E8 ECM connectors.
   3. Measure the resistance of the wire harness side connectors.
      Fig 8: Measuring Resistance Of Wire Harness Side Connectors

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E11-3 (IGT1) - E8-17 (IGT1)	Below 1 Ω
      E37-3 (IGT2) - E6-13 (IGT2)	Below 1 Ω
      E14-3 (IGT3) - E8-16 (IGT3)	Below 1 Ω
      E35-3 (IGT4) - E6-12 (IGT4)	Below 1 Ω
      E17-3 (IGT5) - E8-27 (IGT5)	Below 1 Ω
      E30-3 (IGT6) - E6-11 (IGT6)	Below 1 Ω
      E20-3 (IGT7) - E8-26 (IGT7)	Below 1 Ω
      E28-3 (IGT8) - E6-10 (IGT8)	Below 1 Ω
      E11-3 (IGT1) or E8-17 (IGT1) - Body ground	10 kΩ or higher
      E37-3 (IGT2) or E6-13 (IGT2) - Body ground	10 kΩ or higher
      E14-3 (IGT3) or E8-16 (IGT3) - Body ground	10 kΩ or higher
      E35-3 (IGT4) or E6-12 (IGT4) - Body ground	10 kΩ or higher
      E17-3 (IGT5) or E8-27 (IGT5) - Body ground	10 kΩ or higher
      E30-3 (IGT6) or E6-11 (IGT6) - Body ground	10 kΩ or higher
      E20-3 (IGT7) or E8-26 (IGT7) - Body ground	10 kΩ or higher
      E28-3 (IGT8) or E6-10 (IGT8) - Body ground	10 kΩ or higher

   NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK : GO TO NEXT STEP. 

6. CHECK ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7, IGT8 VOLTAGE) 
   1. Measure the voltage of the ECM connectors when the engine is cranked.
      Fig 9: Measuring Voltage Of ECM Connectors When Engine Cranked

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E8-17 (IGT1) - E6-7 (E1)	0.1 to 4.5 V
      E6-13 (IGT2) - E6-7 (E1)	0.1 to 4.5 V
      E8-16 (IGT3) - E6-7 (E1)	0.1 to 4.5 V
      E6-12 (IGT4) - E6-7 (E1)	0.1 to 4.5 V
      E8-27 (IGT5) - E6-7 (E1)	0.1 to 4.5 V
      E6-11 (IGT6) - E6-7 (E1)	0.1 to 4.5 V
      E8-26 (IGT7) - E6-7 (E1)	0.1 to 4.5 V
      E6-10 (IGT8) - E6-7 (E1)	0.1 to 4.5 V

   NG : REPLACE ECM 

   OK : GO TO NEXT STEP. 

7. CHECK IGNITION COIL (POWER SOURCE) 
   1. Disconnect the E11, E14, E17, E20, E28, E30, E35 and E37 ignition coil connectors.
   2. Turn the engine switch from on (IG) to start.
   3. Measure the voltage of the wire harness side connector.
      Fig 10: Measuring Voltage Of Wire Harness Side Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E11-1 (+B) - Body ground	9 to 14 V
      E37-1 (+B) - Body ground	9 to 14 V
      E14-1 (+B) - Body ground	9 to 14 V
      E35-1 (+B) - Body ground	9 to 14 V
      E17-1 (+B) - Body ground	9 to 14 V
      E30-1 (+B) - Body ground	9 to 14 V
      E20-1 (+B) - Body ground	9 to 14 V
      E28-1 (+B) - Body ground	9 to 14 V

   OK : REPLACE IGNITION COIL 

   NG : GO TO NEXT STEP. 

8. CHECK WIRE HARNESS (IGNITION COIL - IG2 RELAY) 
   1. Inspect the IG2 fuse.
      1. Remove the IG2 fuse from the engine room No. 2 relay block.
      2. Measure the resistance of the IG2 fuse.

         Standard resistance: 

         Below 1 Ω 

   2. Disconnect the E11, E14, E17, E20, E28, E30, E35 and E37 ignition coil connectors.
   3. Remove the IG2 relay from the engine room No. 2 relay block.
   4. Measure the resistance of the wire harness side connectors.
      Fig 11: Identifying IG2 Relay From Engine Room Relay Block

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E11-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E37-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E14-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E35-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E17-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E30-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E20-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E28-1 (+B) - Relay block IG2 relay terminal 3	Below 1 Ω
      E11-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E37-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E14-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E35-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E17-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E30-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E20-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher
      E28-1 (+B) or Relay block IG2 relay terminal 3 - Body ground	10 kΩ or higher

   NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK : REPLACE IGNITION COIL