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 DTC CHECK / CLEAR ).

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 SUPPLY CONTROL POWER

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)
  
  Fig 1: Identifying ABS No.3 Fuse
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE FUSE

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

VOLTAGE SPECIFICATION CHART

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

Fig 2: Identifying Brake Control Power Supply Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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

VOLTAGE SPECIFICATION CHART

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

Fig 3: Identifying Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

VOLTAGE SPECIFICATION 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 Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

VOLTAGE SPECIFICATION CHART

Tester Connection	Condition	Specified Condition
B24-1 (OUT1) - 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 Terminals

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

VOLTAGE SPECIFICATION CHART

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

Fig 6: Identifying Brake Control Power Supply Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE BRAKE CONTROL POWER SUPPLY