On-Vehicle Inspection

3MZ-FE IGNITION SYSTEM:

ON-VEHICLE INSPECTION

NOTE: In the following section, the terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10°C (14°F) to 50°C (122°F). "Hot" means approximately 50°C (122°F) to 100°C (212°F).

1. INSPECT IGNITION COIL ASSEMBLY (WITH IGNITER) AND PERFORM SPARK TEST
(a) Check for DTCs.

NOTE: If a DTC is present, perform a troubleshooting in accordance with the procedure for that DTC.

(b) Check if sparks occur.
(1) Remove the V-bank cover (Removal).
(2) Remove the intake air surge tank (Removal).
(3) Remove the ignition coils.
(4) Using a 16 mm plug wrench, remove the spark plugs.
(5) Install the spark plugs to each ignition coil and connect the ignition coil connectors.
(6) Disconnect the 6 injector connectors.
(7) Ground the spark plugs.
(8) Check if sparks occur at each spark plug while the engine is being cranked.

NOTE: Do not crank the engine for more than 2 seconds.

HINT: If sparks do not occur, do the following test (See procedure "A"):

(9) Using a 16 mm plug wrench, install the spark plugs.
Torque: 25 Nm (255 kgf-cm, 18 ft-lbf)
(10) Install the ignition coils.
Torque: 8 Nm (82 kgf-cm, 71 in-lbf)
(11) Install the intake air surge tank (Installation).
(12) Install the V-bank cover (Installation).
(c) Spark test (Procedure "A")
(1) Check if wire harness side connector of ignition coil (with igniter) is secure.

Result:





(2) Perform spark test with a different ignition coil (with igniter).
1 Replace current ignition coil (with igniter) with a different functioning ignition coil (with igniter).
2 Perform spark test again.

Result:





(3) Check power supply to ignition coil (with igniter).
1 Turn the ignition switch ON.
2 Check that there is battery voltage at ignition coil positive (+) terminal.

Result:





(4) Check resistance of VVT sensor (Testing and Inspection).
Standard resistance:





Result:





(5) Check resistance of crankshaft position sensor (Testing and Inspection).
Standard resistance:





Result:





(6) Check IGT signal from ECM.

Result: