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 connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   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
   B29-4 (GND) - Body ground	Always	Below 1 Ω

3. Turn the ignition switch to ON.
   Fig 1: Inspecting Ignition Coil Assembly Power Source

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   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
   B29-1 (+B) - B29-4 (GND)	Ignition switch ON	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 

OK: Go to next step 

1. Disconnect the ignition coil 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
   B26-2 (IGF) - B30-23 (IGF1)	Always	Below 1 Ω
   B27-2 (IGF) - B30-23 (IGF1)	Always	Below 1 Ω
   B28-2 (IGF) - B30-23 (IGF1)	Always	Below 1 Ω
   B29-2 (IGF) - B30-23 (IGF1)	Always	Below 1 Ω
   B26-3 (IGT1) - B30-108 (IGT1)	Always	Below 1 Ω
   B27-3 (IGT2) - B30-107 (IGT2)	Always	Below 1 Ω
   B28-3 (IGT3) - B30-106 (IGT3)	Always	Below 1 Ω
   B29-3 (IGT4) - B30-105 (IGT4)	Always	Below 1 Ω
   B26-2 (IGF) or B30-23 (IGF1) - Body ground	Always	10 kΩ or higher
   B27-2 (IGF) or B30-23 (IGF1) - Body ground	Always	10 kΩ or higher
   B28-2 (IGF) or B30-23 (IGF1) - Body ground	Always	10 kΩ or higher
   B29-2 (IGF) or B30-23 (IGF1) - Body ground	Always	10 kΩ or higher
   B26-3 (IGT1) or B30-108 (IGT1) - Body ground	Always	10 kΩ or higher
   B27-3 (IGT2) or B30-107 (IGT2) - Body ground	Always	10 kΩ or higher
   B28-3 (IGT3) or B30-106 (IGT3) - Body ground	Always	10 kΩ or higher
   B29-3 (IGT4) or B30-105 (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 ignition switch to ON.
3. Turn the Techstream on.
4. Clear the DTCs. Refer to DTC CHECK / CLEAR .
5. Shuffle the arrangement of the ignition coil assemblies (among the No. 1 to No. 4 cylinders).
   NOTE:

   Do not shuffle the connectors.

6. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
7. Check the DTCs output on the Techstream.
   RESULT
   
   

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

B → See step   4 

A → See step   5