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) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool. Is a DTC set?
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 swirl control solenoid valve power supply circuit.
1) Turn OFF the ignition switch.
2) Disconnect the swirl control solenoid valve harness connector (E84).
3) Connect a test lamp between the ignition power supply circuit (pin 2 of E84) and the body ground.
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) Turn ON the ignition switch. Does the test lamp illuminate?
Yes
=>Go to Swirl control solenoid valve control voltage check.
No
Repair the open circuit or high resistance in the ignition power supply circuit between the ENGINE 15A fuse and the swirl control solenoid valve (pin 2 of E84). Inspect the ENGINE 15A fuse first.
1) Connect a test lamp between the swirl control solenoid valve control circuit (pin 1 of E84) and the battery power supply.
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) Perform the Variable Swirl Valve with a scan tool.
3) Command the swirl control solenoid valve ON/OFF.
The test lamp remains either ON or OFF with the execution of each command.
=>Go to Inspection of swirl control solenoid valve harness connector.
The test lamp remains ON with the execution of each command
=>Go to Inspection for short to ground in swirl control solenoid valve control circuit.
The test lamp remains OFF with the execution of each command.
=>Go to Inspection for open circuit in swirl control solenoid valve control circuit.
1) Inspect the control circuit between the ECM (pin 12 of E1) and the swirl control solenoid valve (pin 1 of E84) for an open circuit or 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 ECM harness connector inspection.
No
Repair the circuit as necessary.
1) Inspect the control circuit between the ECM (pin 12 of E1) and the swirl control solenoid valve (pin 1 of E84) for a short to ground. 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
No
Repair the circuit as necessary.
1) Inspect for poor connections at the swirl control solenoid valve harness connector (pins 1 and 2 of E84). 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
Replace the swirl control solenoid valve.
Refer to "1.Engine 1B.Mechanical(4JJ3 with DPD) swirl control solenoid valve removal".
Refer to "1.Engine 1B.Mechanical(4JJ3 with DPD) swirl control solenoid valve installation".
No
Repair the connections as necessary.
1) Inspect for poor connections at the ECM harness connector (pin 12 of E1). 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
No
Repair the connections as necessary.
Note
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with DPD) ECM removal".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with DPD) ECM installation".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with 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.