DTC P0351-P0354; Ignition Coil "A" Primary / Secondary Circuit [08/2016 - ]: Procedure

1. Disconnect the ignition coil assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B25-4 (GND) - Body ground	Always	Below 1 Ω
   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

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  2

1. Disconnect the ignition coil assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Ignition Coil Assembly)

2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   B25-1 (+B) - B25-4 (GND)	Ignition switch ON	11 to 14 V
   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

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IGT/INJ RELAY) 

Result:  1

OK 

See step  3

1. Disconnect the ignition coil assembly connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B25-2 (IGF) - B33-102 (IGF1)	Always	Below 1 Ω
   B26-2 (IGF) - B33-102 (IGF1)	Always	Below 1 Ω
   B27-2 (IGF) - B33-102 (IGF1)	Always	Below 1 Ω
   B28-2 (IGF) - B33-102 (IGF1)	Always	Below 1 Ω
   B25-3 (IGT1) - B33-57 (IGT1)	Always	Below 1 Ω
   B26-3 (IGT2) - B33-56 (IGT2)	Always	Below 1 Ω
   B27-3 (IGT3) - B33-55 (IGT3)	Always	Below 1 Ω
   B28-3 (IGT4) - B33-54 (IGT4)	Always	Below 1 Ω
   B25-2 (IGF) or B33-102 (IGF1) - Body ground	Always	10 kΩ or higher
   B26-2 (IGF) or B33-102 (IGF1) - Body ground	Always	10 kΩ or higher
   B27-2 (IGF) or B33-102 (IGF1) - Body ground	Always	10 kΩ or higher
   B28-2 (IGF) or B33-102 (IGF1) - Body ground	Always	10 kΩ or higher
   B25-3 (IGT1) or B33-57 (IGT1) - Body ground	Always	10 kΩ or higher
   B26-3 (IGT2) or B33-56 (IGT2) - Body ground	Always	10 kΩ or higher
   B27-3 (IGT3) or B33-55 (IGT3) - Body ground	Always	10 kΩ or higher
   B28-3 (IGT4) or B33-54 (IGT4) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [08/2013 - ]

   Powertrain > Engine and ECT > Clear DTCs 

5. Shuffle the arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).
   NOTE:

   Do not change the location of the connectors.

6. Perform a simulation test.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
8. Read the DTCs.

   Powertrain > Engine and ECT > Trouble Codes 

   Result

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

   HINT: 

   Perform "Inspection After Repair" after replacing the ignition coil assembly.

   Refer to INITIALIZATION [08/2016 - ]

Result:  1

A 

REPLACE ECM. Refer to  REMOVAL [08/2016 - ] 

Result:  2

B 

REPLACE IGNITION COIL ASSEMBLY. Refer to  REMOVAL [08/2013 - ]