CHECK CONNECTION BETWEEN INTELLIGENT TESTER AND ECM
CHECK THROTTLE BODY ASSEMBLY (CHECK MIL ILLUMINATED)
CHECK ACCELERATOR PEDAL ASSEMBLY (CHECK MIL ILLUMINATED)
CHECK VVT SENSOR FOR INTAKE CAMSHAFT BANK 1 (CHECK MIL ILLUMINATED)
CHECK VVT SENSOR FOR EXHAUST CAMSHAFT BANK 1 (CHECK MIL ILLUMINATED)
CHECK VVT SENSOR FOR INTAKE CAMSHAFT BANK 2 (CHECK MIL ILLUMINATED)
CHECK VVT SENSOR FOR EXHAUST CAMSHAFT BANK 2 (CHECK MIL ILLUMINATED)
SFI SYSTEM - VC Output Circuit |
DESCRIPTION
The ECM constantly uses 5 V from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit.When the VC circuit is short-circuited, the microprocessor in the ECM and sensors that receive power through the VC circuit are inactivated because the power is not supplied from the VC circuit. Under this condition, the system does not start up and the MIL does not illuminate even if the system malfunctions.
- HINT:
- Under normal conditions, the MIL is illuminated for several seconds when the ignition switch is first turned to the ON position. The MIL goes off when the engine is started.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK MIL |
Check that the Malfunction Indicator Lamp (MIL) lights up when turning the ignition switch to the ON position.
- OK:
- MIL lights up.
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| NG | |
| 2.CHECK CONNECTION BETWEEN INTELLIGENT TESTER AND ECM |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position and turn the tester on.
Check the communication between the tester and ECM.
- Result:
Result Proceed to Communication is possible A Communication is not possible B
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| B | |
| 3.CHECK THROTTLE BODY ASSEMBLY (CHECK MIL ILLUMINATED) |
Disconnect the throttle body connector.
Turn the ignition switch to the ON position.
Check the MIL.
- Result:
Result Proceed to MIL illuminates A MIL does not illuminate B
Reconnect the throttle body connector.
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| B | |
| 4.CHECK ACCELERATOR PEDAL ASSEMBLY (CHECK MIL ILLUMINATED) |
Disconnect the accelerator pedal position sensor connector.
Turn the ignition switch to the ON position.
Check the MIL.
- Result:
Result Proceed to MIL illuminates A MIL does not illuminate B
Reconnect the accelerator pedal position sensor connector.
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| B | |
| 5.CHECK VVT SENSOR FOR INTAKE CAMSHAFT BANK 1 (CHECK MIL ILLUMINATED) |
Disconnect the connector from the VVT sensor for intake camshaft bank 1.
Turn the ignition switch to the ON position.
Check the MIL.
- Result:
Result Proceed to MIL illuminates A MIL does not illuminate B
Reconnect the connector to the VVT sensor for intake camshaft bank 1.
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| B | |
| 6.CHECK VVT SENSOR FOR EXHAUST CAMSHAFT BANK 1 (CHECK MIL ILLUMINATED) |
Disconnect the connector from the VVT sensor for exhaust camshaft bank 1.
Turn the ignition switch to the ON position.
Check the MIL.
- Result:
Result Proceed to MIL illuminates A MIL does not illuminate B
Reconnect the connector to the VVT sensor for exhaust camshaft bank 1.
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| B | |
| 7.CHECK VVT SENSOR FOR INTAKE CAMSHAFT BANK 2 (CHECK MIL ILLUMINATED) |
Disconnect the connector from the VVT sensor for intake camshaft bank 2.
Turn the ignition switch to the ON position.
Check the MIL.
- Result:
Result Proceed to MIL illuminates A MIL does not illuminate B
Reconnect the connector to the VVT sensor for intake camshaft bank 2.
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| B | |
| 8.CHECK VVT SENSOR FOR EXHAUST CAMSHAFT BANK 2 (CHECK MIL ILLUMINATED) |
Disconnect the connector from the VVT sensor for exhaust camshaft bank 2.
Turn the ignition switch to the ON position.
Check the MIL.
- Result:
Result Proceed to MIL illuminates A MIL does not illuminate B
Reconnect the connector to the VVT sensor for exhaust camshaft bank 2.
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| B | |
| 9.CHECK HARNESS AND CONNECTOR |
Disconnect the throttle body connector.
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Disconnect the accelerator pedal position sensor connector.
Disconnect the the connector from VVT sensor for intake camshaft bank 1.
Disconnect the connector from the VVT sensor for exhaust camshaft bank 1.
Disconnect the connector from the VVT sensor for intake camshaft bank 2.
Disconnect the connector from the VVT sensor for exhaust camshaft bank 2.
Disconnect the C58 (RHD) and A24 (RHD), or C55 (LHD) and A55 (LHD) ECM connectors.
Measure the resistance according to the value(s) in the table below.
- Standard resistance (Check for short):
- RHD:
Tester Connection Specified Condition VCTA (C58-96) - Body ground 10 kΩ or higher VCV1 (C58-115) - Body ground 10 kΩ or higher VCV2 (C58-113) - Body ground 10 kΩ or higher VCE1 (C58-114) - Body ground 10 kΩ or higher VCE2 (C58-112) - Body ground 10 kΩ or higher VCPA (A24-57) - Body ground 10 kΩ or higher VCP2 (A24-58) - Body ground 10 kΩ or higher - LHD:
Tester Connection Specified Condition VCTA (C55-96) - Body ground 10 kΩ or higher VCV1 (C55-115) - Body ground 10 kΩ or higher VCV2 (C55-113) - Body ground 10 kΩ or higher VCE1 (C55-114) - Body ground 10 kΩ or higher VCE2 (C55-112) - Body ground 10 kΩ or higher VCPA (A55-57) - Body ground 10 kΩ or higher VCP2 (A55-58) - Body ground 10 kΩ or higher
Reconnect the ECM connectors.
Reconnect the fuel pressure sensor connector.
Reconnect the connector to the VVT sensor for exhaust camshaft bank 2.
Reconnect the connector to the VVT sensor for intake camshaft bank 2.
Reconnect the connector to the VVT sensor for exhaust camshaft bank 1.
Reconnect the connector to the VVT sensor for intake camshaft bank 1.
Reconnect the accelerator pedal position sensor connector.
Reconnect the throttle body connector.
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| OK | ||
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