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EC-1134
[YD (WITH EURO-OBD)]
DTC P0134 A/F SENSOR 1
3. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
● Harness connectors F30, M63
● Harness for open or short between air fuel ratio sensor 1 and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK INTERMITTENT INCIDENT
Perform EC-1058, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 6.
NG >> Repair or replace.
6. REPLACE AIR FUEL RATIO (A/F) SENSOR 1
1. Replace air fuel ratio (A/F) sensor 1.
CAUTION:
● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m
(19.7 in) onto a hard surface such as a concrete floor; use a new one.
● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated
Oxygen Sensor Thread Cleaner and approved anti-seize lubricant.
2. Perform A/F Sensor Learning Value Clear. Refer to EC-1000, "
A/F Sensor Learning Value Clear" .
>> INSPECTION END
Removal and Installation BBS002JP
AIR FUEL RATIO (A/F) SENSOR 1
Refer to EM-150, "CATALYST" .
A/F sensor 1 terminal ECM terminal
193
285
Continuity should exist.
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