DTC Logic
DTC DETECTION LOGIC
NOTE:
1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause | |
P1572 | ASCD BRAKE SW (ASCD BRAKE SW) | A) | When the vehicle speed is above 30 km/ h (19 MPH), ON signals from the stop lamp switch and the brake pedal position switch are sent to the ECM at the same time. |
|
B) | Brake pedal position switch signal is not sent to ECM for extremely long time while the vehicle is driving. |
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
NOTE:
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be detected.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
Is DTC detected? YES >> Proceed to EC-397, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
Is DTC detected? YES >> Proceed to EC-397, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK OVERALL FUNCTION-1
With CONSULT
Without CONSULT
Is the inspection result normal? YES >> GO TO 2.
NO >> MT models: GO TO 3.
>> CVT models: GO TO 4.
2.CHECK OVERALL FUNCTION-2
With CONSULT
Select “BRAKE SW2” and check indication as per the following conditions.
Without CONSULT
Check the voltage between ECM harness connector terminals as per the following conditions.
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> GO TO 7.
3.CHECK CLUTCH PEDAL POSITION SWITCH POWER SUPPLY
Is the inspection result normal? YES >> GO TO 4.
NO >> Perform the trouble diagnosis for power supply circuit.
4.CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY
Is the inspection result normal? YES >> GO TO 5.
NO >> Perform the trouble diagnosis for power supply circuit.
5.CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to EC-394, "Component Inspection (Brake Pedal Position Switch)" Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace brake pedal position switch. Refer to BR-22, "Exploded View".
7.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 8.
NO >> Perform the trouble diagnosis for power supply circuit.
8.CHECK STOP LAMP SWITCH GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 9.
NO >> Repair or replace error-detected parts.
9.CHECK STOP LAMP SWITCH
Check the stop lamp switch. Refer to EC-395, "Component Inspection (Stop Lamp Switch)".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace stop lamp switch. Refer to BR-22, "Exploded View".
Component Inspection (Brake Pedal Position Switch)
1.CHECK BRAKE PEDAL POSITION SWITCH-1
Is the inspection result normal? YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK BRAKE PEDAL POSITION SWITCH-2
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace brake pedal position switch. Refer to BR-22, "Exploded View".
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH-1
Is the inspection result normal? YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-2
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace stop lamp switch. Refer to BR-22, "Exploded View".
Rocker cover
Exploded View
Oil filler cap
Rocker cover protector
Oil filler tube
O-ring
Rocker cover
Rocker cover gasket
Refer to INSTALLATION
Removal and Installation
REMOVAL
Remove intake manifold. Refer to EM-27, "Exploded View".
Remove rocker cover protector.
Re ...
Diagnosis and repair workflow
Work Flow
OVERALL SEQUENCE
*1: Include 1st trip DTC.
*2: Include 1st trip freeze frame data.
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred) using the ...
Battery terminal with fusible link
Exploded view
Battery terminal with fusible link
Harness connector
Removal and installation
Removal
Loosen the battery terminal nuts and disconnect both battery negative and
positive terminals. Refer to
pg-50, "exploded view".
Caution:
To prevent damage to the parts, di ...