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: Procedure

1. Disconnect the ignition coil assembly connectors.
   Fig 1: Inspecting Ignition Coil Assembly (Power Source)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D23-1 (+B) - D23-4 (GND)	Power switch on (IG)	11 to 14 V
   D22-1 (+B) - D22-4 (GND)	Power switch on (IG)	11 to 14 V
   D21-1 (+B) - D21-4 (GND)	Power switch on (IG)	11 to 14 V
   D20-1 (+B) - D20-4 (GND)	Power switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IG2 RELAY) 

OK: Go to next step 

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

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D23-4 (GND) - Body ground	Always	Below 1 Ω
   D22-4 (GND) - Body ground	Always	Below 1 Ω
   D21-4 (GND) - Body ground	Always	Below 1 Ω
   D20-4 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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 (Check for Open)

   Tester Connection	Condition	Specified Condition
   D23-2 (IGF) - D28-23 (IGF)	Always	Below 1 Ω
   D22-2 (IGF) - D28-23 (IGF)	Always	Below 1 Ω
   D21-2 (IGF) - D28-23 (IGF)	Always	Below 1 Ω
   D20-2 (IGF) - D28-23 (IGF)	Always	Below 1 Ω

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D23-3 (IGT1) - D28-108 (IGT1)	Always	Below 1 Ω
   D22-3 (IGT2) - D28-107 (IGT2)	Always	Below 1 Ω
   D21-3 (IGT3) - D28-106 (IGT3)	Always	Below 1 Ω
   D20-3 (IGT4) - D28-105 (IGT4)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   D23-2 (IGF), D22-2 (IGF), D21-2 (IGF), D20-2 (IGF) or D28-23 (IGF) - Body ground	Always	10 kΩ or higher

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   D23-3 (IGT1) or D28-108 (IGT1) - Body ground	Always	10 kΩ or higher
   D22-3 (IGT2) or D28-107 (IGT2) - Body ground	Always	10 kΩ or higher
   D21-3 (IGT3) or D28-106 (IGT3) - Body ground	Always	10 kΩ or higher
   D20-3 (IGT4) or D28-105 (IGT4) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs. Refer to DTC CHECK / CLEAR .
5. Shuffle arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders).
   NOTE:

   Do not shuffle the connectors.

6. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
8. Read the DTCs.

   Result

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

B → See step   5 

A → See step   6