DTC P0351-P0354; Ignition Coil "A" Primary / Secondary Circuit [12/2012 - 10/2015]: Procedure

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B12-4 (GND) - Body ground	Always	Below 1 Ω
   B11-4 (GND) - Body ground	Always	Below 1 Ω
   B10-4 (GND) - Body ground	Always	Below 1 Ω
   B9-4 (GND) - Body ground	Always	Below 1 Ω

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Disconnect the ignition coil assembly connectors.

   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	Switch Condition	Specified Condition
   B12-1 (+B) - B12-4 (GND)	Ignition switch ON	11 to 14 V
   B11-1 (+B) - B11-4 (GND)	Ignition switch ON	11 to 14 V
   B10-1 (+B) - B10-4 (GND)	Ignition switch ON	11 to 14 V
   B9-1 (+B) - B9-4 (GND)	Ignition switch ON	11 to 14 V

Result: 

NG 

See step  5

Result: 

OK 

See step  3

1. Disconnect the ignition coil assembly connectors.
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
   B12-2 (IGF) - B77-51 (IGF1)	Always	Below 1 Ω
   B11-2 (IGF) - B77-51 (IGF1)	Always	Below 1 Ω
   B10-2 (IGF) - B77-51 (IGF1)	Always	Below 1 Ω
   B9-2 (IGF) - B77-51 (IGF1)	Always	Below 1 Ω
   B12-3 (IGT1) - B77-57 (IGT1)	Always	Below 1 Ω
   B11-3 (IGT2) - B77-56 (IGT2)	Always	Below 1 Ω
   B10-3 (IGT3) - B77-55 (IGT3)	Always	Below 1 Ω
   B9-3 (IGT4) - B77-54 (IGT4)	Always	Below 1 Ω
   B12-3 (IGT1) or B77-57 (IGT1) - Body ground	Always	10 kΩ or higher
   B11-3 (IGT2) or B77-56 (IGT2) - Body ground	Always	10 kΩ or higher
   B10-3 (IGT3) or B77-55 (IGT3) - Body ground	Always	10 kΩ or higher
   B9-3 (IGT4) or B77-54 (IGT4) - Body ground	Always	10 kΩ or higher
   B12-2 (IGF), B11-2 (IGF), B10-2 (IGF), B9-2 (IGF) or B77-51 (IGF1) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

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 [12/2012 - ]

   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 [12/2012 - ]

Result: 

A 

REPLACE ECM:  REMOVAL [12/2012 - ] 

Result: 

B 

REPLACE IGNITION COIL ASSEMBLY:  REMOVAL [12/2012 - ] 

1. Disconnect the ignition coil assembly connectors.
2. Remove the IG2 relay from the engine room relay block and junction block assembly.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B12-1 (+B) - IG2 relay terminal 5	Always	Below 1 Ω
   B11-1 (+B) - IG2 relay terminal 5	Always	Below 1 Ω
   B10-1 (+B) - IG2 relay terminal 5	Always	Below 1 Ω
   B9-1 (+B) - IG2 relay terminal 5	Always	Below 1 Ω
   B12-1 (+B), B11-1 (+B), B10-1 (+B), B9-1 (+B) or IG2 relay terminal 5 - Body ground	Always	10 kΩ or higher

Result: 

OK 

GO TO ECM POWER SOURCE CIRCUIT:  ECM Power Source Circuit [12/2012 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR