B2657

B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING SENSOR

DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. CAN Comm Circuit.
- If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. Control Unit.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Turn ignition switch ON.
2.Select "Self Diagnostic Result" mode of "HVAC" using CONSULT.
3.Check DTC.
Is DTC detected?
YES- .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect exhaust gas / outside odor detecting sensor connector.
3.Turn ignition switch ON.
4.Check voltage between exhaust gas / outside odor detecting sensor harness and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 2.

2. CHECK FUSE

1.Turn ignition switch OFF.
2.Check 10A fuse [No3, located in fuse block (J/B)]
NOTE:
Fuse, Fusible Link And Relay Box.
Is the inspection result normal?
YES- GO TO 3.
NO- Replace blown fuse after repairing the affected circuit if a fuse is blown.

3. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR POWER SUPPLY CIRCUIT FOR

OPEN
1.Disconnect fuse block (J/B) connector.
2.Check continuity between exhaust gas / outside odor detecting sensor harness connector and fuse block (J/B) connector.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair harness or connector.

4. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR POWER SUPPLY CIRCUIT FOR

GROUND SHORT
1.Disconnect exhaust gas / outside odor detecting sensor connector, ionizer connector, ECV connector and
A/C auto amp.connector.
2.Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.





Is the inspection result normal?
YES- Check ignition power supply circuit. Ignition Power Supply.
NO- Repair harness or connector.

5. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair harness or connector.

6. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR INPUT SIGNAL

1.Connect exhaust gas / outside odor detecting sensor connector.
2.Turn ignition switch ON.
3.Check signal between exhaust gas / outside odor detecting sensor harness connector and ground with oscilloscope.





NOTE:
Signal differs depending on measurement environment of the vehicle.
Is the inspection result normal?
YES- GO TO 7.
NO- Replace exhaust gas / outside odor detecting sensor. Service and Repair.

7. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR INPUT SIGNAL CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect exhaust gas / outside odor detecting sensor connector and A/C auto amp.connector.
3.Check continuity between exhaust gas / outside odor detecting sensor harness connector and A/C auto amp. connector.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair harness or connector.

8. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR INPUT SIGNAL CIRCUIT FOR

GROUND SHORT
Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 9.
NO- Repair harness or connector.

9. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR INPUT SIGNAL CIRCUIT FOR BATTERY SHORT

Check voltage between exhaust gas / outside odor detecting sensor harness and ground.





Is the inspection result normal?
YES- GO TO 10.
NO- Repair harness or connector.

10. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
YES- Replace A/C auto amp. Removal And Installation.
NO- Repair or replace malfunctioning parts.