DESCRIPTION
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
P0571 |
Brake Switch "A" Circuit |
Condition 1:
Condition 2:
|
Condition 1:
Condition 2:
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
w/o Smart Key System: Click here
w/ Smart Key System: Click here
PROCEDURE
1. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Check for DTCs.
Click here
HINT:
When DTC P0571 (detection condition 2) is stored by the dynamic radar cruise control system, DTC C1380 is stored by the vehicle stability control system. Therefore, if DTC P0571 (detection condition 2) is stored, inspect the vehicle stability control system first.
Result |
Proceed to |
---|---|
Vehicle stability control system DTCs are not output |
A |
Vehicle stability control system DTCs are output |
B |
B | ![]() |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
2. |
CHECK FOR DTC (RADAR CRUISE1) |
(a) Clear the DTCs.
Click here
(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC P0571 is not output |
A |
DTC P0571 is output |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
|
3. |
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY AND BODY GROUND) |
(a) Disconnect the stop light switch assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
S10-2 - Body ground |
Always |
11 to 14 V |
S10-4 - Body ground |
Ignition switch to ON |
11 to 14 V |
S10-4 - Body ground |
Ignition switch off |
Below 1 V |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
INSPECT STOP LIGHT SWITCH ASSEMBLY |
(a) Remove the stop light switch assembly.
Click here
(b) Inspect the stop light switch assembly.
Click here
NG | ![]() |
REPLACE STOP LIGHT SWITCH ASSEMBLY |
|
5. |
CHECK HARNESS AND CONNECTOR (ECM - STOP LIGHT SWITCH ASSEMBLY) |
(a) Disconnect the E21 ECM connector.
(b) Disconnect the S10 stop light switch assembly connector.
(c) Disconnect the S1 skid control ECU (brake actuator assembly) connector.
(d) Disconnect the S7 shift lock control unit connector.
(e) Remove the STOP relay from the engine room relay block.
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E21-11 (ST1-) - S10-3 |
Always |
Below 1 Ω |
E21-10 (STP) - S10-1 |
Always |
Below 1 Ω |
E21-11 (ST1-) or S10-3 - Body ground |
Always |
10 kΩ or higher |
E21-10 (STP) or S10-1 - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Seat Belt Buckle Switch LH Circuit Malfunction (B1656/38)
DESCRIPTION
The seat belt buckle switch LH circuit consists of the airbag sensor assembly
and the front seat inner belt assembly LH (seat belt buckle switch LH).
DTC B1655/37 is stored when a malfunction is detected in the seat belt buckle
switch LH circuit.
DTC No.
DTC ...
Lost Communication with ECM (C1437)
DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the ECM
via the CAN communication system.
DTC Code
DTC Detection Condition
Trouble Area
C1437
When the IG1 terminal voltage is 10 V or higher and the veh ...
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Vacuum Brake Booster
*B
for Hydraulic Brake Booster
*1
BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)
*2
BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)
...