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) Operate the vehicle under the conditions for running the DTC.
5) Observe the DTC information with a scan tool. Is a DTC set?
Yes
=>Go to Prioritized DTC check.
No
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(4JJ3 with DPD) intermittent conditions of engine".
1) Observe the DTC information with a scan tool. Is DTC P06A3 set at the same time?
Yes
Go to DTC P06A3 diagnosis.
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P06A3 Sensor Reference Voltage 4 Circuit".
No
=>Go to Oil level sensor signal output voltage check.
1) Turn OFF the ignition switch.
2) Disconnect the oil level sensor harness connector (E100).
3) Turn ON the ignition switch.
4) Measure the voltage between the oil level sensor signal circuit (pin 3 of E100) and the frame ground with a DMM.
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: 4.5 to 5.5 V
The reading is more than the specified value.
=>Go to Inspection for short to power supply in oil level sensor signal circuit.
The reading is within the specified range.
=>Go to Oil level sensor signal voltage check using fused jumper wire.
The reading is less than the specified value.
=>Go to Inspection for open circuit in oil level sensor signal circuit.
1) Connect a fused jumper wire between the oil level sensor signal circuit and the ground circuit (pins 2 and 3 of E100).
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) Observe the DTC information with a scan tool. Is DTC P250C set?
Yes
=>Go to Inspection for short to 5 V power supply in oil level sensor signal circuit.
No
=>Go to Inspection for open circuit in oil level sensor ground circuit.
1) Inspect the signal circuit between the ECM (pin 1 of E1) and the oil level sensor (pin 3 of E100) for a short to the battery power supply circuit or a short to the ignition power supply circuit. Is the result normal?
Note
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 the signal circuit between the ECM (pin 1 of E1) and the oil level sensor (pin 3 of E100) 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 ground circuit between the ECM (pin 22 of E3) and the oil level sensor (pin 2 of E100) 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 Inspection for short to 5 V power supply in oil level sensor signal circuit.
No
Repair the circuit as necessary.
1) Inspect the signal circuit between the ECM (pin 1 of E1) and the oil level sensor (pin 3 of E100) for a short to the 5 V power supply circuit. 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 Oil level sensor harness connector inspection.
No
Repair the circuit as necessary.
1) Inspect for poor connections at the oil level sensor harness connector (pins 2 and 3 of E100). 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 oil level sensor.
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with DPD) oil level sensor removal".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 with DPD) oil level sensor installation".
No
Repair the connections as necessary.
1) Inspect for poor connections at the ECM harness connector (pin 1 of E1, and pin 22 of E3). 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.