Inspection Procedure

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (See INITIALIZATION ).

CHECK FREEZE FRAME DATA

Check the INF code from the FREEZE FRAME DATA memorized when the DTC (C1337/43) is stored (See FREEZE FRAME DATA ).

Result

RESULT CHART

Condition	Proceed To
INF codes (109 and 110) are output	A
INF codes (101, 102, 105, 106 and 108) are output	B
INF code (103) is output	C

B: REPLACE BRAKE CONTROL POWER SUPPLY

C: GO TO step 7

A: Go to next step

INSPECT FUSE (ABS NO.3 FUSE)
1. Remove the ABS No.3 fuse from R/B No. 4.
2. Check the ABS No.3 fuse.
  Resistance: Below 1 Ω (Continuity)
NG: REPLACE FUSE

Fig 1: Identifying ABS No.3 Fuse From R/B No. 4
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Go to next step

INSPECT BRAKE CONTROL POWER SUPPLY (+BC TERMINAL)

Measure the voltage according to the value(s) in the table below.
HINT:

Measure the voltage from the back side of the connector with the connector connected.

Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
B24-8 (+BC) - Body ground	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying Brake Control Power Supply Connector Terminal (+BC Terminal)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Go to next step

INSPECT SKID CONTROL ECU (+BI1, +BI2 TERMINAL)

Measure the voltage according to the value(s) in the table below.
HINT:

Measure the voltage from the back side of the connector with the connector connected to the skid control ECU.

Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
S39-3 (+BI1) - Body ground	10 to 14 V
S40-5 (+BI2) - Body ground	10 to 14 V

Fig 3: Identifying Skid Control ECU Connector Terminal (+BI1, +BI2 Terminal)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT SKID CONTROL ECU (+BO1, +BO2 TERMINAL)

Measure the voltage according to the value(s) in the table below.
HINT:

Measure the voltage from the back side of the connector with the connector connected to the skid control ECU.

Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
S39-5 (+BO1) - Body ground	10 to 14 V
S40-4 (+BO2) - Body ground	10 to 14 V

Fig 4: Identifying Skid Control ECU Connector Terminal (+BO1, +BO2 Terminal)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT BRAKE CONTROL POWER SUPPLY (CTY+, OUT1, OUT2 TERMINAL)

Turn the ignition switch on.
Measure the voltage according to the value(s) in the table below.
HINT:

Measure the voltage from the back side of the connector with the connector connected.

Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
B24-1 (OUTI) - Body ground	Ignition switch ON	9 to 13 V
B24-2 (CTY+) - Body ground	Ignition switch ON	9 to 13 V
B24-7 (OUT2) - Body ground	Ignition switch ON	9 to 13 V

Fig 5: Identifying Brake Control Power Supply Connector Terminal (+CTY, OUT1, OUT2 Terminal)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: REPLACE SKID CONTROL ECU

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT BATTERY
1. Check the battery voltage.
  Voltage: 10 to 14 V
NG: INSPECT CHARGING SYSTEM

OK: Go to next step

INSPECT BRAKE CONTROL POWER SUPPLY (+BC TERMINAL)

Measure the voltage according to the value(s) in the table below.
HINT:

Measure the voltage from the back side of the connector with the connector connected.

Voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
B24-8 (+BC) - Body ground	9 to 13 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 6: Identifying Brake Control Power Supply Connector Terminal (+BC Terminal)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: REPLACE BRAKE CONTROL POWER SUPPLY