P0101

DTC P0101

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

- Select a level road with no traffic to minimize the risk of accident.
- Perform the test extremely carefully.
- Perform the road test using 2 persons, a driver and an assistant.

NOTE:

- Be sure to troubleshoot first unexpected DTCs previously detected in "DTC Confirmation Procedure".
- Confirm that the following conditions are met in this "DTC Confirmation Procedure".

- Engine speed >= 500 rpm
- DTC P0102, P0103, P0122, P0123, P0222 or P0223 is not detected.

1) Warm up engine to normal operating temperature.
2) Drive vehicle at 60 - 100 km/h (37 - 62 mile/h) for 1 min.

DTC Troubleshooting



1. Was "Engine and Emission Control System Check" performed?
YES
Go to Step 2.
NO
Go to Engine and Emission Control System Check Engine and Emission Control System Check.
2. DTC check
Check DTC.
Is there DTC(s) other than P0101?
YES
Go to applicable DTC(s).
NO
Go to Step 3.
3. Exhaust system and air intake system check
Check exhaust system and air intake system for clogging or leak.
Are they in good condition?
YES
Go to Step 4.
NO
Repair or replace defective part.
4. MAF sensor power supply circuit check
Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect connector from MAF & IAT sensor.
Check for proper terminal connection to MAF & IAT sensor connector.
If connections are OK, push engine switch to change ignition mode to "ON".
Check that voltage between "A1" circuit and ground is battery voltage.
Is it in good condition?
YES
Go to Step 5.
NO
Repair or replace defective wire harness.
5. MAF sensor ground circuit check
Check that voltage between "A1" and "A3" circuits are battery voltage.
Is it in good condition?
YES
Go to Step 6.
NO
Repair or replace "A3" circuit.
6. MAF sensor signal circuit check
Push engine switch to change ignition mode to "OFF".
Disconnect "C01" and "E01" connectors.
Check for proper terminal connection to "C01" and "E01" connectors.
If connections are OK, check the following points.
Resistance of "A2" circuit: less than 1
Resistance between "A2" circuit and ground: infinity
Resistance between "A2" circuit terminal and other terminal at MAF & IAT sensor connector: infinity
Voltage of "A2" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")
Are they in good condition?
YES
Go to Step 7.
NO
Repair or replace defective wire harness.
7. MAF sensor check
Check MAF sensor. Testing and Inspection
Is it in good condition?
YES
Go to Step 8.
NO
Replace MAF & IAT sensor. Removal and Installation
8. Throttle body assembly check
Check throttle body for performance. Testing and Inspection
Is it in good condition?
YES
Replace ECM and recheck DTC. Service and Repair
NO
Replace throttle body assembly. Throttle Body Assembly Removal and Installation