Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
CHECK COMMUNICATION BETWEEN GTS AND ECM
CHECK MIL (THROTTLE POSITION SENSOR (for Bank 1))
CHECK MIL (THROTTLE POSITION SENSOR (for Bank 2))
CHECK MIL (NO. 1 EGR VALVE POSITION SENSOR)
CHECK MIL (NO. 2 EGR VALVE POSITION SENSOR)
CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)
CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)
CHECK MIL (FUEL PRESSURE SENSOR)
CHECK MIL (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY (for Bank 1))
CHECK MIL (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY (for Bank 2))
CHECK MIL (NOZZLE VANE POSITION SENSOR (for Bank 1))
CHECK MIL (NOZZLE VANE POSITION SENSOR (for Bank 2))
ECD SYSTEM (w/ DPF) - VC Output Circuit
DESCRIPTION
The ECM constantly generates 5 V of power from the battery voltage 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 are supplied with 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 engine switch is first turned on (IG). The MIL goes off when the engine is started.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- After replacing the ECM, the new ECM needs registration () and initialization ().
| 1.CHECK MIL |
Check that the Malfunction Indicator Lamp (MIL) lights up when turning the engine switch on (IG).
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
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| B | |
| 2.CHECK COMMUNICATION BETWEEN GTS AND ECM |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and GTS on.
Check the communication between the GTS and ECM.
| Result | Proceed to |
| Communication is possible | A |
| Communication is not possible | B |
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| B | |
| 3.CHECK MIL (THROTTLE POSITION SENSOR (for Bank 1)) |
Disconnect the C83 throttle position sensor (for Bank 1) connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C83 throttle position sensor (for Bank 1) connector.
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| B | |
| 4.CHECK MIL (THROTTLE POSITION SENSOR (for Bank 2)) |
Disconnect the C84 throttle position sensor (for Bank 2) connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C84 throttle position sensor (for Bank 2) connector.
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| B | |
| 5.CHECK MIL (NO. 1 EGR VALVE POSITION SENSOR) |
Disconnect the C87 No. 1 EGR valve connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C87 No. 1 EGR valve connector.
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| B | |
| 6.CHECK MIL (NO. 2 EGR VALVE POSITION SENSOR) |
Disconnect the C88 No. 2 EGR valve connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C88 No. 2 EGR valve connector.
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| B | |
| 7.CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR) |
Disconnect the A31 accelerator pedal position sensor connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the A31 accelerator pedal position sensor connector.
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| B | |
| 8.CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR) |
Disconnect the C80 manifold absolute pressure sensor connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C80 manifold absolute pressure sensor connector.
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| B | |
| 9.CHECK MIL (FUEL PRESSURE SENSOR) |
Disconnect the C82 fuel pressure sensor connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C82 fuel pressure sensor connector.
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| B | |
| 10.CHECK MIL (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY (for Bank 1)) |
Disconnect the N16 differential pressure sensor assembly (for Bank 1) connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the N16 differential pressure sensor assembly (for Bank 1) connector.
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| B | |
| 11.CHECK MIL (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY (for Bank 2)) |
Disconnect the C157 differential pressure sensor assembly (for Bank 2) connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C157 differential pressure sensor assembly (for Bank 2) connector.
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| B | |
| 12.CHECK MIL (NOZZLE VANE POSITION SENSOR (for Bank 1)) |
Disconnect the C89 nozzle vane position sensor (for Bank 1) connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the C89 nozzle vane position sensor (for Bank 1) connector.
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| B | |
| 13.CHECK MIL (NOZZLE VANE POSITION SENSOR (for Bank 2)) |
Disconnect the z66 nozzle vane position sensor (for Bank 2) connector.
Turn the engine switch on (IG).
Check the MIL.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
Reconnect the z66 nozzle vane position sensor (for Bank 2) connector.
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| B | |
| 14.CHECK HARNESS AND CONNECTOR |
Disconnect the throttle position sensor (for Bank 1) connector.
Disconnect the throttle position sensor (for Bank 2) connector.
Disconnect the No. 1 EGR valve connector.
Disconnect the No. 2 EGR valve connector.
Disconnect the accelerator pedal position sensor connector.
Disconnect the manifold absolute pressure sensor connector.
Disconnect the fuel pressure sensor connector.
Disconnect the differential pressure sensor assembly (for Bank 1) connector.
Disconnect the differential pressure sensor assembly (for Bank 2) connector.
Disconnect the nozzle vane position sensor (for Bank 1) connector.
Disconnect the nozzle vane position sensor (for Bank 2) connector.
Disconnect the ECM connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Short):
for LHD Tester Connection Condition Specified Condition C45-91 (VC) - Body ground Always 10 kΩ or higher C45-110 (VCVL) - Body ground Always 10 kΩ or higher C45-118 (VCM) - Body ground Always 10 kΩ or higher C45-120 (VNVC) - Body ground Always 10 kΩ or higher C45-66 (VCPM) - Body ground Always 10 kΩ or higher A38-55 (VCPA) - Body ground Always 10 kΩ or higher A38-56 (VCP2) - Body ground Always 10 kΩ or higher for RHD Tester Connection Condition Specified Condition C46-91 (VC) - Body ground Always 10 kΩ or higher C46-110 (VCVL) - Body ground Always 10 kΩ or higher C46-118 (VCM) - Body ground Always 10 kΩ or higher C46-120 (VNVC) - Body ground Always 10 kΩ or higher C46-66 (VCPM) - Body ground Always 10 kΩ or higher A52-55 (VCPA) - Body ground Always 10 kΩ or higher A52-56 (VCP2) - Body ground Always 10 kΩ or higher
Reconnect the throttle position sensor (for Bank 1) connector.
Reconnect the throttle position sensor (for Bank 2) connector.
Reconnect the No. 1 EGR valve connector.
Reconnect the No. 2 EGR valve connector.
Reconnect the accelerator pedal position sensor connector.
Reconnect the manifold absolute pressure sensor connector.
Reconnect the fuel pressure sensor connector.
Reconnect the differential pressure sensor assembly (for Bank 1) connector.
Reconnect the differential pressure sensor assembly (for Bank 2) connector.
Reconnect the nozzle vane position sensor (for Bank 1) connector.
Reconnect the nozzle vane position sensor (for Bank 2) connector.
Reconnect the ECM connectors.
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| OK | ||
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