DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P0031 | A/F SEN1 HTR (B1) [Air fuel ratio (A/F) sensor 1 heater (bank 1)control circuit low] | The current amperage in the A/F sensor 1 heater circuit is out of
the normal
range.
(An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.) |
P0032 | A/F SEN1 HTR (B1) [Air fuel ratio (A/F) sensor 1 heater (bank 1)control circuit high] | The current amperage in the A/F sensor 1 heater circuit is out of
the normal
range.
(An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.) |
POSSIBLE CAUSE
DTC P0031
DTC P0032
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than between 11 V at idle. >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected? YES >> Proceed to EC-185, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
3.CHECK A/F SENSOR 1 HEATER Check the A/F sensor 1 heater. Refer to EC-186, "Component Inspection".
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4.
4.REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1. Refer to EM-29, "Exploded View".
CAUTION:
>> INSPECTION END
5.CHECK INTERMITTENT INCIDENT
Refer to GI-41, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1
Is the inspection result normal? YES >> INSPECTION END
NO >> GO TO 2.
2.REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace air fuel ratio (A/F) sensor 1. Refer to EM-29, "Exploded View".
CAUTION:
>> INSPECTION END
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...
Fuel gauge
Fuel gauge
The gauge indicates the approximate fuel level
in the tank.
The gauge may move slightly during braking,
turning, acceleration, or going up or down hills.
The gauge needle returns to 0 (Empty) after the
ignition switch is placed in the OFF position.
The low fuel warning ligh ...
B142A ignition voltage
Description
DTC B142A IGNITION VOLTAGE
Ignition voltage is supplied to the air bag diagnosis sensor unit when the
ignition is in the ON position. The air
bag diagnosis sensor unit will monitor for low or high ignition voltage.
PART LOCATION
Refer to SRC-6, "Component Parts Location" ...