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) Start the engine.
4) Observe the DTC information with a scan tool. Is a DTC set?
Yes
=>Go to Turbocharger operation check.
No
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(4JJ3 with DPD) intermittent conditions of engine".
1) Perform the Turbocharger with a scan tool.
2) Check visually the operation of the control rod while commanding the Desired Turbocharger Position parameter OPEN/CLOSE in steps. Does the control rod operate smoothly?
Yes
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(4JJ3 with DPD) intermittent conditions of engine".
No
=>Go to Inspection for open circuit in turbocharger internal control unit power supply circuit.
1) Connect a test lamp between the ignition power supply circuit (pin 1 of E17) and the frame ground. Does the test lamp illuminate?
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 Inspection for open circuit in turbocharger internal control unit ground circuit.
No
Repair the open circuit or high resistance in the ignition power supply circuit between the ENGINE 15A fuse and the turbocharger internal control unit (pin 1 of E17). Inspect the ENGINE 15A fuse first.
1) Connect a test lamp between the ignition power supply circuit and the ground circuit (pins 1 and 2 of E17). Does the test lamp illuminate?
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 Inspection for open circuit in CAN circuit.
No
Repair the open circuit or high resistance in the ground circuit between the turbocharger internal control unit (pin 2 of E17) and the frame ground, and re-tighten or clean the corroded area as necessary.
1) Turn OFF the ignition switch.
2) Disconnect the turbocharger internal control unit harness connector (E17).
3) Turn ON the ignition switch.
4) Measure the voltage between the CAN High circuit (pin 4 of E17) and the frame ground with a DMM. Is the voltage within the specified range?
5) Measure the voltage between the CAN Low circuit (pin 3 of E17) and the frame ground with a DMM. Is the voltage within the specified range?
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.).
Value: 1.5 to 3.5 V
6) Are all of the values normal?
Yes
=>Go to Turbocharger internal control unit harness connector inspection.
No
Repair the open circuit or high resistance in the CAN High circuit and CAN Low circuit between the turbocharger internal control unit (pins 3 and 4 of E17) and the intermediate connector.
1) Inspect for poor connections at the turbocharger internal control unit harness connector (pins 3 and 4 of E17). Is the connection status 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 Turbocharger inspection.
No
Repair the connections as necessary.
1) Inspect the turbocharger for the following. Is the result normal?
Refer to "1.Engine 1F.Induction(4JJ3 with DPD) Turbocharger inspection".
Yes
=>Go to Turbocharger replacement.
No
Repair as necessary.
Refer to "1.Engine 1F.Induction(4JJ3 with DPD) Turbocharger removal".
Refer to "1.Engine 1F.Induction(4JJ3 with DPD) Turbocharger installation".
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.