Fault Code Nos.
Fault Code No.: 24 Diagnostic Code No.: ---
Item: 02 sensor: no normal signals are received from the 02 sensor.
Fail-Safe System: Able to Start Engine | Able to Drive Vehicle
Indicated: ---
Procedure: ---
Probable Cause of Confirmation of Service
Item Malfunction and Check Maintenance Job Completion
Item Malfunction and Check Maintenance Job Completion
1
|
Installed condition of 02 sensor.
|
Improperly installed sensor
Reinstall or replace the sensor. |
Start the engine, warm it up
and then race it or execute the diagnostic mode (Code No. 63). If, the Fault Code No. is NOT displayed, then Service is Complete. If however, the Fault Code No. is displayed, then Go To Item 2 below. |
2
|
Connection of 02 sensor coupler.
Check the locking condition of the coupler. Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the pins). |
Improperly connected
Connect the coupler securely or replace the wire harness. |
Start the engine, warm it up
and then race it or execute the diagnostic mode (Code No. 63). If, the Fault Code No. is NOT displayed, then Service is Complete. If however, the Fault Code No. is displayed, then Go To Item 3 below. |
3
|
Connection of ECU coupler.
Check the locking condition of the coupler. Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the pins). |
Improperly connected
Connect the coupler securely or replace the wire harness. |
Start the engine, warm it up
and then race it or execute the diagnostic mode (Code No. 63). If, the Fault Code No. is NOT displayed, then Service is Complete. If however, the Fault Code No. is displayed, then Go To Item 4 below. |
4
|
Wire harness continuity.
|
Open or short circuit.
Replace the wire harness. Between 02 sensor coupler and ECU coupler. (Gray/White-Gray/White) and (Gray/Green-Gray/Green) Between 02 sensor coupler and joint coupler. (Red/White-Red/White) (Black/Blue-Black/Blue) Between joint coupler and ECU coupler. (Black/Blue-Black/Blue) (Red/White-Red/White) |
Start the engine, warm it up
and then race it or execute the diagnostic mode (Code No. 63). If, the Fault Code No. is NOT displayed, then Service is Complete. If however, the Fault Code No. is displayed, then Go To Item 5 below. |
5
|
Check fuel pressure.
|
Refer to "Checking the
Pressure Regulator Operation". |
Start the engine, warm it up
and then race it or execute the diagnostic mode (Code No. 63). If, the Fault Code No. is NOT displayed, then Service is Complete. If however, the Fault Code No. is displayed, then Go To Item 6 below. |
6
|
Defective O2 sensor.
|
Check the 02 sensor.
Replace if defective. |
Start the engine, warm it up
and then race it or execute the diagnostic mode (Code No. 63). If, the Fault Code No. is NOT displayed, then Service is Complete. If however, the Fault Code No. is displayed, then Go To Item 7 below. |
7
|
Malfunction in ECU.
|
Replace the ECU.
|
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