Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) Diagnostic system check-engine controls".
1) Connect the scan tool.
2) Turn OFF the ignition switch for 1 minute or more.
3) Crank the engine for 15 seconds.
4) Observe the DTC information with a scan tool. Is a DTC set?
Yes
Go to the applicable DTC diagnosis.
No
=>Go to Fuel pressure check when cranking.
1) Verify that the fuel tank has enough fuel and that the fuel quality is good.
Note
2) While cranking the engine for 5 seconds, observe the Fuel Rail Pressure (FRP) parameter on the scan tool. When cranking, is the Fuel Rail Pressure (FRP) parameter more than or equal to the specified value?
Value: 20 MPa { 2,900 psi }
Yes
No
=>Go to Fuel system inspection.
1) Inspect while referring to Fuel system inspection. Is the result normal?
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) fuel system check".
Yes
=>Go to FRP reduction valve resistance check.
No
Repair or replace as necessary.
1) Disconnect the FRP reduction valve harness connector (E29).
Refer to "RHD Engine Control (4JJ3 with DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Engine Control (4JJ3 with DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
2) Measure the resistance of the FRP reduction valve with a DMM. Is the resistance within the specified range?
Value: 0.4 to 0.7 Ω At 20°C {68°F}
Yes
=>Go to FRP reduction valve circuit inspection.
No
Replace the fuel rail.
Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) common rail (fuel rail) removal".
Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) common rail (fuel rail) installation".
1) Inspect for poor connections at the FRP reduction valve harness connector (pins 1 and 2 of E29). Is the connection status normal?
2) Inspect for poor connections at the ECM harness connector (pins 3 and 4 of E2). Is the connection status normal?
3) Inspect the circuit between the ECM (pins 3 and 4 of E2) and the FRP reduction valve (pins 1 and 2 of E29) for high resistance. Is the result normal?
Refer to "RHD Engine Control (4JJ3 with DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Engine Control (4JJ3 with DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to FRP sensor circuit inspection.
No
Repair the circuit or connection as necessary.
1) Inspect for poor connections at the FRP sensor harness connector (pins 1, 2, and 3 of E45). Is the connection status normal?
2) Inspect for poor connections at the ECM harness connector (pins 17, 27, and 29 of E2, and pin 30 of E3). Is the connection status normal?
3) Inspect the circuit between the ECM (pins 17, 27, and 29 of E2, and pin 30 of E3) and the FRP sensor (pins 1, 2, and 3 of E45) for high resistance. Is the result normal?
Refer to "RHD Engine Control (4JJ3 with DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Engine Control (4JJ3 with DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
4) Are all of the results normal?
Yes
Replace the fuel rail.
Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) common rail (fuel rail) removal".
Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) common rail (fuel rail) installation".
No
Repair the circuit or connection as necessary.
1) Inspect whether the display of the following sensor input value is normal. Is the result normal?
Note
Yes
=>Go to Engine mechanical inspection.
No
Repair or replace as necessary.
1) Inspect the other possibilities of the non-starting of the engine for the following.
2) Repair as necessary.
Procedure completion
1) Reconnect all of the disconnected harness connectors.
2) Turn OFF the ignition switch for 1 minute or more.
3) Start the engine. Does the engine start?
Yes
The system is normal.
No