Inspection Procedure

HINT:

Read freeze frame data using the Intelligent tester or Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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. PERFORM SIMULATION TEST 
   1. Clear the DTC(s) (see DTC CHECK / CLEAR ).
   2. Change the arrangement of the ignition coils (with igniters).
      NOTE: Do not change the location of the connectors.
   3. Perform a simulation test.

      Result 

      RESULT CHART
      
      

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

   B: REPLACE IGNITION COIL ASSEMBLY  (See REMOVAL )

   A: GO TO NEXT STEP 

2. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) 
   1. Disconnect the E38, E30, E41, E33, E42, E34, E45 or E36 ignition coil connector.
   2. Turn the engine switch on (IG).
   3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      IGNITION COIL ASSEMBLY (POWER SOURCE) VOLTAGE
      
      

      Tester Connection	Switch Condition	Specified Condition
      E38-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E30-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E41-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E33-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E42-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E34-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E45-1 (+B) - Body ground	Engine switch on (IG)	11 to 14 V
      E36-4 (+B) - Body ground	Engine switch on (IG)	11 to 14 V

      Fig 1: Identifying Connector Terminal Of Ignition Coil

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      IGNITION COIL ASSEMBLY (POWER SOURCE) RESISTANCE
      
      

      Tester Connection	Condition	Specified Condition
      E38-4 (GND) - Body ground	Always	Below 1 Ω
      E30-4 (GND) - Body ground	Always	Below 1 Ω
      E41-4 (GND) - Body ground	Always	Below 1 Ω
      E33-4 (GND) - Body ground	Always	Below 1 Ω
      E42-4 (GND) - Body ground	Always	Below 1 Ω
      E34-4 (GND) - Body ground	Always	Below 1 Ω
      E45-4 (GND) - Body ground	Always	Below 1 Ω
      E36-4 (GND) - Body ground	Always	Below 1 Ω

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: GO TO NEXT STEP 

3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) 
   1. Disconnect the E38, E30, E41, E33, E42, E34, E45 or E36 ignition coil connector.
   2. Disconnect the E2 and E4 ECM connectors.
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open) 

      IGNITION COIL ASSEMBLY - ECM (CHECK FOR OPEN)
      
      

      Tester Connection	Condition	Specified Condition
      E38-3 (IGT1) - E4-27 (IGT1)	Always	Below 1 Ω
      E30-3 (IGT2) - E2-23 (IGT2)	Always	Below 1 Ω
      E41-3 (IGT3) - E4-26 (IGT3)	Always	Below 1 Ω
      E33-3 (IGT4) - E2-22 (IGT4)	Always	Below 1 Ω
      E42-3 (IGT5) - E4-25 (IGT5)	Always	Below 1 Ω
      E34-3 (IGT6) - E2-21 (IGT6)	Always	Below 1 Ω
      E45-3 (IGT7) - E4-24 (IGT7)	Always	Below 1 Ω
      E36-3 (IGT8) - E2-20 (IGT8)	Always	Below 1 Ω

      Fig 2: Identifying Connector Terminal Of Ignition Coil

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance (Check for short) 

      IGNITION COIL ASSEMBLY - ECM (CHECK FOR SHORT)
      
      

      Tester Connection	Condition	Specified Condition
      E38-3 (IGT1) or E4-27 (IGT1) - Body ground	Always	10 kΩ or higher
      E30-3 (IGT2) or E2-23 (IGT2) - Body ground	Always	10 kΩ or higher
      E41-3 (IGT3) or E4-26 (IGT3) - Body ground	Always	10 kΩ or higher
      E33-3 (IGT4) or E2-22 (IGT4) - Body ground	Always	10 kΩ or higher
      E42-3 (IGT5) or E4-25 (IGT5) - Body ground	Always	10 kΩ or higher
      E34-3 (IGT6) or E2-21 (IGT6) - Body ground	Always	10 kΩ or higher
      E45-3 (IGT7) or E4-24 (IGT7) - Body ground	Always	10 kΩ or higher
      E36-3 (IGT8) or E2-20 (IGT8) - Body ground	Always	10 kΩ or higher

      Standard resistance (Check for open) 

      IGNITION COIL ASSEMBLY - ECM (CHECK FOR OPEN)
      
      

      Tester Connection	Condition	Specified Condition
      E38-2 (IGF1) - E4-32 (IGF1)	Always	Below 1 Ω
      E30-2 (IGF2) - E2-28 (IGF2)	Always	Below 1 Ω
      E41-2 (IGF2) - E2-28 (IGF2)	Always	Below 1 Ω
      E33-2 (IGF1) - E4-32 (IGF1)	Always	Below 1 Ω
      E42-2 (IGF2) - E2-28 (IGF2)	Always	Below 1 Ω
      E34-2 (IGF1) - E4-32 (IGF1)	Always	Below 1 Ω
      E45-2 (IGF1) - E4-32 (IGF1)	Always	Below 1 Ω
      E36-2 (IGF2) - E2-28 (IGF2)	Always	Below 1 Ω

      Standard resistance (Check for short) 

      IGNITION COIL ASSEMBLY - ECM (CHECK FOR SHORT)
      
      

      Tester Connection	Condition	Specified Condition
      E38-2 (IGF1) or E4-32 (IGF1) - Body ground	Always	10 kΩ or higher
      E30-2 (IGF2) or E2-28 (IGF2) - Body ground	Always	10 kΩ or higher
      E41-2 (IGF2) or E2-28 (IGF2) - Body ground	Always	10 kΩ or higher
      E33-2 (IGF1) or E4-32 (IGF1) - Body ground	Always	10 kΩ or higher
      E42-2 (IGF2) or E2-28 (IGF2) - Body ground	Always	10 kΩ or higher
      E34-2 (IGF1) or E4-32 (IGF1) - Body ground	Always	10 kΩ or higher
      E45-2 (IGF1) or E4-32 (IGF1) - Body ground	Always	10 kΩ or higher
      E36-2 (IGF2) or E2-28 (IGF2) - Body ground	Always	10 kΩ or higher

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: GO TO NEXT STEP 

4. CHECK IF DTC OUTPUT RECURS 
   1. Clear the DTC (see DTC CHECK / CLEAR ).
   2. Connect the Intelligent tester or Techstream to the DLC3.
   3. Turn the engine switch on (IG) and turn the tester ON.
   4. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
      2. Techstream - Select: Powertrain / Engine / Trouble Codes.
   5. Read DTCs.

      Result 

      IF DTC OUTPUT RECURS
      
      

      Display (DTC Output)	Proceed to
      P0351, P0352, P0353, P0354, P0355, P0356, P0357 and/or P0358 are output	A
      No output	B

   B: SYSTEM OK 

   A: REPLACE ECM (See  REMOVAL  )