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Engine Ignition System (3mz-fe) Toyota Camry Solara II

Ignition System 8 illustrations ~981 words

Scheme 7

Scheme 7: PARTS LOCATION
Scheme 7: PARTS LOCATION

SYSTEM DIAGRAM

Ignition timing is determined by the ECM based on signals from various sensors.

Scheme 8

Scheme 8: SYSTEM DIAGRAM
Scheme 8: SYSTEM DIAGRAM

Scheme 9

Scheme 9
Scheme 9

ON-VEHICLE INSPECTION

Note. In the following step, 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 Check for DTCs. NOTE: If a DTC is present, perform a troubleshooting in accordance with the procedure for that DTC. Check if sparks occur. Remove the V-bank cover (See «REMOVAL»(/toyota/camry-solara/ii-2003-2009/remont/accessory-drive-belts/#engine-mechanical-3mz-fe) ). Remove the intake air surge tank (See «INSTALLATION»(/toyota/camry-solara/ii-2003-2009/remont/accessory-drive-belts/#engine-mechanical-3mz-fe) ). Remove the ignition coils. Using a 16 mm plug wrench, remove the spark plugs. Install the spark plugs to each ignition coil and connect the ignition coil connectors. Disconnect the 6 injector connectors. Ground the spark plugs. 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"): Using a 16 mm plug wrench, install the spark plugs. Torque: 25 N*m (255 kgf*cm, 18 ft.*lbf) Install the ignition coils. Torque: 8 N*m (82 kgf*cm, 71 in.*lbf) Install the intake air surge tank (See «INSTALLATION»(/toyota/camry-solara/ii-2003-2009/remont/accessory-drive-belts/#engine-mechanical-3mz-fe) ). Install the V-bank cover (See «INSTALLATION»(/toyota/camry-solara/ii-2003-2009/remont/accessory-drive-belts/#engine-mechanical-3mz-fe) ). Spark test (Procedure "A") Check if wire harness side connector of ignition coil (with igniter) is secure. Result: RESULT REFERENCE (1 OF 3) Result Proceed to NG Connect securely. OK Go to next step. Perform spark test with a different ignition coil (with igniter). Replace current ignition coil (with igniter) with a different functioning ignition coil (with igniter). Perform spark test again. Result: RESULT REFERENCE (2 OF 3) Result Proceed to OK Replace faulty ignition coil (with igniter). NG Go to next step. Check power supply to ignition coil (with igniter). Turn the ignition switch ON. Check that there is battery voltage at ignition coil positive (+) terminal. Result: RESULT REFERENCE (3 OF 3) Result Proceed to NG Check wiring between ignition switch to ignition coil (with igniter). OK Go to next step. Check resistance of «VVT SENSOR»(/toyota/camry-solara/ii-2003-2009/remont/ignition-system/#engine-ignition-system-3mz-fe) . Standard resistance SPECIFIED CONDITION RESISTANCE REFERENCE Temperature Specified condition Cold 835 to 1,400 ohm Hot 1,060 to 1,645 ohm Result: RESULT REFERENCE Result Proceed to NG Replace VVT sensor. OK Go to next step. Check resistance of crankshaft position sensor (See «VVT SENSOR»(/toyota/camry-solara/ii-2003-2009/remont/ignition-system/#engine-ignition-system-3mz-fe) ). Standard resistance SPECIFIED CONDITION RESISTANCE REFERENCE Temperature Specified condition Cold 1,630 to 2,740 ohm Hot 2,065 to 3,225 ohm Result: RESULT REFERENCE (1 OF 2) Result Proceed to NG Replace crankshaft position sensor. OK Go to next step. Check IGT signal from ECM (See «FAIL-SAFE CHART»(/toyota/camry-solara/ii-2003-2009/remont/testing-diagnostics/#engine-control-system-2az-fe) ). Result: RESULT REFERENCE (2 OF 2) Result Proceed to NG Check ECM. OK Repair wiring between ignition coil and ECM.

INSPECTION

Note. In the following step, 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).

Scheme 10

Scheme 10: INSPECTION
Scheme 10: INSPECTION

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13
  1. INSPECT SPARK PLUG NOTE: Do not use a wire brush for cleaning. Do not attempt to adjust the electrode gap of a used spark plug. Check the electrode. Using an megaohmmeter, measure the insulation resistance. Correct insulation resistance: 10 Mohm or more If the resistance is less than the specified value, proceed to step (d). HINT: If the megaohmmeter is not available, do the following simple inspection instead. Alternative inspection method: Quickly accelerate the engine to 4,000 RPM 5 times. Remove the spark plug. Visually check the spark plug. If the electrode is dry, the spark plug is functioning. Proceed to step 2 . If the electrode is damp, proceed to step ( c ), ( d ) and ( e ). Install the spark plug. Check the spark plug for any damage on its thread and insulator. If there is any damage, replace the spark plug. Recommended spark plug SPARK PLUG SPECIFICATION Manufacturer Type DENSO SK20R11 NGK IFR6A11 Check the spark plug electrode gap. Maximum electrode gap for used spark plug: 1.3 mm (0.051 in.) If the gap is greater than the maximum, replace the spark plug. Correct electrode gap for new spark plug: 1.0 to 1.1 mm (0.039 to 0.043 in.) NOTE: If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip. Never attempt to adjust the gap on a used plug. Clean the spark plugs. If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it. Air pressure: 588 kPa (6 kgf/cm 2 , 85 psi) Duration: 20 seconds or less HINT: Only use the spark plug cleaner when the electrode is free of oil. If the electrode has trace of oil, use gasoline to clean off the oil before using the spark plug cleaner.

REMOVAL

HINT

A bolt without a torque specification is shown in the standard bolt chart (See SPECIFIED TORQUE FOR STANDARD BOLTS ).

Scheme 14

Scheme 14: REMOVAL
Scheme 14: REMOVAL
  1. REMOVE AIR CLEANER INLET ASSEMBLY
  2. REMOVE AIR CLEANER ASSEMBLY
  3. REMOVE VVT SENSOR Disconnect the sensor connector. Remove the bolt and sensor.
  1. INSPECT VVT SENSOR Measure the resistance between the terminals. Standard Resistance VVT SENSOR RESISTANCE REFERENCE Temperature Specified Condition Cold 835 to 1,400 ohm Hot 1,060 to 1,645 ohm If the result is not as specified, replace the sensor.

INSTALLATION

  1. INSTALL VVT SENSOR Apply a light coat of engine oil to the O-ring on the sensor. Install the sensor with the bolt. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Connect the sensor connector.
  2. INSTALL AIR CLEANER ASSEMBLY HINT: See «INSTALLATION»(/toyota/camry-solara/ii-2003-2009/remont/accessory-drive-belts/#engine-mechanical-3mz-fe) .
  3. INSTALL AIR CLEANER INLET ASSEMBLY
  4. CHECK CONNECTION OF VACUUM HOSE

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