Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) Diagnostic system check-engine controls".
1) Connect the scan tool.
2) Turn OFF the ignition switch for 1 minute or more.
3) Start the engine.
4) Observe the DTC information with a scan tool. Is DTC P0237, P0238, P2228, or P2229 set at the same time?
Yes
Go to the applicable DTC diagnosis.
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC P0237 Turbocharger Boost Sensor Circuit Low".
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC P0238 Turbocharger Boost Sensor Circuit High".
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC P2228 Barometric Pressure Circuit Low".
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC P2229 Barometric Pressure Circuit High".
No
=>Go to Pressure difference check between the boost pressure and the barometric pressure.
1) Turn ON the ignition switch.
2) Observe the Boost Pressure parameter and Barometric Pressure (BARO) parameter on the scan tool. Is the difference between the Boost Pressure parameter and the Barometric Pressure (BARO) parameter within the specified range?
Value: 10 kPa { 1.5 psi }
Yes
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(4JJ3 without DPD) intermittent conditions of engine".
No
=>Go to Barometric pressure check.
1) Refer to the table and compare the Barometric Pressure (BARO) parameter on the scan tool with the surrounding barometric pressure. Is the Barometric Pressure (BARO) parameter within the specified range?
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM inspection".
Yes
=>Go to Inspection of each harness connector related to boost pressure sensor circuit.
No
1) Inspect for poor connections at the boost pressure sensor harness connector (pins 1, 2, and 3 of E31). Is the connection status normal?
2) Inspect for poor connections at the ECM harness connector (pins 27 and 28 of E2, and pin 30 of E3). Is the connection status normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
3) Are all of the results normal?
Yes
=>Go to Inspection for high resistance in boost pressure sensor circuit.
No
Repair the connections as necessary.
1) Inspect the circuit between the ECM (pins 27 and 28 of E2, and pin 30 of E3) and the boost pressure sensor (pins 1, 2, and 3 of E31) for high resistance. Is the result normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
Replace the boost pressure sensor.
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) boost pressure sensor removal".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) boost pressure sensor installation".
No
Repair the circuit as necessary.
Note
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM removal".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM installation".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM setting".
Procedure completion
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch for 1 minute or more.
3) Start the engine.
4) Operate the vehicle under the conditions for running the DTC.
5) Observe the DTC information with a scan tool.