DTC Description
DTC DETECTION LOGIC
To judge malfunctions, this diagnosis measures response time of the A/F signal computed by ECM from the A/ F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P014C | A/F SENSOR1 (B1) (O2 sensor slow response - rich to lean bank 1 sensor 1) |
|
P014D | A/F SENSOR1 (B1) (O2 sensor slow response - lean to rich bank 1 sensor 1) | |
P015A | A/F SENSOR1 (B1) (O2 sensor delayed response - rich to lean bank 1 sensor 1) | |
P015B | A/F SENSOR1 (B1) (O2 sensor delayed response - lean to rich bank 1 sensor 1) |
POSSIBLE CAUSE
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 11 V at idle.
Do you have CONSULT? YES >> GO TO 2.
NO >> GO TO 6.
2.PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
NOTE: If “PRSNT” changed to “ABSNT”, refer to EC-157, "Component Function Check".
Is “PRSNT” displayed on CONSULT screen? YES >> GO TO 4.
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
Perform DTC confirmation procedure-1 again.
Is “PRSNT” displayed on CONSULT screen? YES >> GO TO 4.
NO >> Refer to EC-157, "Component Function Check".
4.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
NOTE: If “CMPLT” changed to “INCMP”, refer to EC-157, "Component Function Check".
Is “CMPLT” displayed on CONSULT screen? YES >> GO TO 5.
NO >> Refer to EC-157, "Component Function Check".
5.PERFORM SELF-DIAGNOSIS
With CONSULT
Check the “SELF-DIAG RESULT”.
Is any DTC detected? YES >> Proceed to EC-257, "Diagnosis Procedure".
NO >> INSPECTION END
6.CHECK AIR-FUEL RATIO SELF-LEARNING VALUE
With GST
Is the total percentage within ±15%? YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
>> Repair or replace malfunctioning part.
8.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected? YES >> Proceed to EC-257, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.RETIGHTEN A/F SENSOR 1
Loosen and retighten the A/F sensor 1. Refer to EM-29, "Exploded View".
>> GO TO 2.
2.CHECK EXHAUST GAS LEAK
Is exhaust gas leak detected? YES >> Repair or replace.
NO >> GO TO 3.
3.CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected? YES >> Repair or replace.
NO >> GO TO 4.
4.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
Is the 1st trip DTC P0171 or P172 detected? Is it difficult to start engine? YES >> Perform trouble diagnosis for DTC P0171 or P0172. Refer to EC-260, "DTC Description" or EC- 265, "DTC Description".
NO >> GO TO 5.
5.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT
Is the inspection result normal? YES >> GO TO 7.
NO >> Repair or replace error-detected parts.
7.CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Refer to EC-186, "Component Inspection".
Is the inspection result normal? YES >> GO TO 8.
NO >> GO TO 11.
8.CHECK MASS AIR FLOW SENSOR
Refer to EC-200, "Component Inspection".
Is the inspection result normal? YES >> GO TO 9.
NO >> Replace mass air flow sensor. Refer to EM-24, "Exploded View".
9.CHECK PCV VALVE
Refer to EC-498, "Inspection".
Is the inspection result normal? YES >> GO TO 10.
NO >> Repair or replace PCV valve. Refer to EC-14, "Component Parts Location".
10.CHECK INTERMITTENT INCIDENT
Perform GI-41, "Intermittent Incident".
Is the inspection result normal? YES >> GO TO 11.
NO >> Repair or replace.
11.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
Symptom diagnosis
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any
custome ...
Indicator/warning lights, Red lights
Principle
Indicator/warning lights in the instrument cluster
display the status of some functions in the vehicle
and indicate when a fault is present in the
monitored systems.
General information
The indicator/warning lights can light up in a variety
of combinations and colors.
Several of the light ...
Crash zone sensor
Exploded View
Crash zone sensor
Crash zone sensor harness
connector
Bracket
Removal and Installation
WARNING:
Before servicing the SRS, turn ignition switch OFF, disconnect
both battery terminals then wait at
least three minutes.
Do not use a ...