Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER 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)
ECD SYSTEM (w/o 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 ignition switch is first turned to ON. 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 ignition switch to ON.
| Result | Proceed to |
| MIL illuminates | A |
| MIL does not illuminate | B |
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| B | |
| 2.CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER AND ECM |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and tester on.
Check the communication between the tester 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 ignition switch to ON.
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 ignition switch to ON.
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) |
- HINT:
- For vehicles without EGR valve, perform troubleshooting from the next step.
Disconnect the C87 No. 1 EGR valve connector.
Turn the ignition switch to ON.
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) |
- HINT:
- For vehicles without EGR valve, perform troubleshooting from the next step.
Disconnect the C88 No. 2 EGR valve connector.
Turn the ignition switch to ON.
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 ignition switch to ON.
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 ignition switch to ON.
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 ignition switch to ON.
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 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 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 C45-90 (VCEG) - Body ground Always 10 kΩ or higher C45-91 (VCVL) - Body ground Always 10 kΩ or higher C45-70 (VCM) - 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 C46-90 (VCEG) - Body ground Always 10 kΩ or higher C46-91 (VCVL) - Body ground Always 10 kΩ or higher C46-70 (VCM) - 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 ECM connectors.
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| OK | ||
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