DTC Logic
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
P0031 | A/F SEN 1 HTR (B1) (HO2S heater control circuit low bank 1 sensor 1) | 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 SEN 1 HTR (B1) (HO2S heater control circuit high bank 1 sensor 1) | 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.) |
|
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-176, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
*1: Except California
*2: For California
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
*1: Except California
*2: For California
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-177, "Component Inspection (A/F Sensor 1 Heater)".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace malfunctioning air fuel ratio (A/F) sensor 1. Refer to EM-30, "Exploded View".
Component Inspection (A/F Sensor 1 Heater)
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace air fuel ratio (A/F) sensor 1. Refer to EM-30, "Exploded View".
Air fresheners
Most air fresheners use a solvent that could affect
the vehicle interior. If you use an air freshener,
take the following precautions:
Hanging-type air fresheners can cause permanent
discoloration when they contact vehicle
interior surfaces. Place the air freshener
in a location that all ...
Front wiper auto stop signal circuit
Component function check
1. Check front wiper (auto stop) operation
Consult data monitor
Select “WIP AUTO STOP” of IPDM E/R DATA MONITOR item.
Operate the front wiper.
With the front wiper operation, check the monitor status.
Is the inspection result normal?
YES >> ...
Precaution for Liquid Gasket
REMOVAL OF LIQUID GASKET
After removing nuts and bolts, separate the mating surface, using Tool
and remove old liquid gasket.
Tool number : KV10111100 (J-37228)
CAUTION:
Be careful not to damage the mating surfaces.
Tap (1) Tool to insert it, and then slide it (2) by tapping on t ...