Page 2417 of 3000

BC–56BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Disconnect the parking brake switch connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
C122930E14
Tester Connection Condition Specified Condition
S3-3 (IG1) - Body
groundIgnition switch ON (IG) 10 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR (IG1 CIRCUIT)
5INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)
C058919E22
Tester Connection Specified Condition
S3-1 (GND1) - Body ground Below 1
S3-23 (GND2) - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (GND CIRCUIT)
6INSPECT PARKING BRAKE SWITCH
C106667E07
Tester Connection Condition Specified Condition
P6-1 - Body groundParking brake switch
ON
(Switch pin free)Below 1
P6-1 - Body groundParking brake switch
OFF
(Switch pin pushed in)10 k or higher
REPLACE PARKING BRAKE SWITCH
Page 2418 of 3000
BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–57
BC
(a) Disconnect the skid control ECU connector and parking
brake switch.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the brake fluid level warning switch
connector.
7CHECK HARNESS AND CONNECTOR
C122972E04
Tester Connection Specified Condition
S3-12 (PKB) - P6-1 Below 1
S3-12 (PKB) - Body ground 10 k or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (PKB CIRCUIT)
8INSPECT BRAKE FLUID LEVEL WARNING SWITCH
Page 2419 of 3000
BC–58BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
(c) Measure the resistance according to the value(s) in the
table below.
HINT:
A float is placed inside the reservoir. Its position can be
changed by increasing/decreasing the level of brake
fluid.
Standard resistance
HINT:
If there is no problem after finishing the above check,
adjust the brake fluid level to the MAX level.
NG
OK
(a) Disconnect the combination meter connector.
C119428E01
Tester Connection Condition Specified Condition
B1-1 - B1-2Float up
(Switch OFF)1.9 to 2.1 k
B1-1 - B1-2Float down
(Switch ON)Below 1
REPLACE BRAKE MASTER CYLINDER
RESERVOIR SUB-ASSEMBLY
9INSPECT HARNESS AND CONNECTOR (BETWEEN BRAKE FLUID LEVEL WARNING SW
AND COMBINATION METER)
Page 2420 of 3000
BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–59
BC
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Turn the ignition switch off.
(b) Disconnect the combination meter connector.
C119429E03
Tester Connection Specified Condition
C10-13 - B1-1 Below 1
C10-13 - Body ground 10 k or higher
B1-2 - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (BRAKE FLUID LEVEL
WARNING SWITCH CIRCUIT)
10CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND
COMBINATION METER ASSEMBLY)
Page 2421 of 3000
BC–60BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Check the combination meter assembly (See page ME-
4).
HINT:
If troubleshooting has been carried out according to the
PROBLEM SYMPTOMS TABLE, refer back to the table and
proceed to the next step before replacing the part (See page
BC-7).
NG
OK
C 1111 6 2 E 0 6
Tester Connection Specified Condition
S3-19 (BRL) - C10-14 Below 1
S3-19 (BRL) - Body ground 10 k or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
11INSPECT COMBINATION METER ASSEMBLY
REPLACE COMBINATION METER
ASSEMBLY
REPLACE BRAKE ACTUATOR ASSEMBLY
Page 2422 of 3000
BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–61
BC
WIRING DIAGRAM
See page BC-52.
INSPECTION PROCEDURE
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to the on position.
(c) Check that the BRAKE warning light comes on.
OK:
BRAKE warning light comes on.
HINT:
If troubleshooting has been carried out according to the
PROBLEM SYMPTOMS TABLE, refer back to the table and
proceed to the next step before replacing the part (See page
BC-7).
NG
OK
(a) Turn the ignition switch off.
(b) Disconnect the combination meter connector.
Brake Warning Light does not Come ON
1INSPECT BRAKE WARNING LIGHT
Go to step 2
REPLACE BRAKE ACTUATOR ASSEMBLY
2CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND
COMBINATION METER ASSEMBLY)
Page 2423 of 3000
BC–62BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Check the combination meter assembly (See page ME-
4).
HINT:
If troubleshooting has been carried out according to the
PROBLEM SYMPTOMS TABLE, refer back to the table and
proceed to the next step before replacing the part (See page
BC-7).
NG
OK
C 1111 6 2 E 0 5
Tester Connection Specified Condition
S3-19 (BRL) - C10-14 Below 1
S3-19 (BRL) - Body ground 10 k or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
3INSPECT COMBINATION METER ASSEMBLY
REPLACE COMBINATION METER
ASSEMBLY
END
Page 2424 of 3000
BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–63
BC
DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
The DTCs are displayed by the blinking pattern of the ABS warning light.
WIRING DIAGRAM
HINT:
When warning lights continue to blink, a ground short in the wiring of terminal TC of the DLC3 or an
internal ground short in one or more ECU is suspected.
INSPECTION PROCEDURE
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
TC and CG Terminal Circuit
1INSPECT DLC3 (BETWEEN TC of DLC3 AND CG of DLC3)
C114571E09
E106867E21
Tester Connection Specified Condition
D1-13 (TC) - D1-4 (CG) 10 to 14 V
Go to step 3