Inspection Procedure

INSPECT BRAKE MASTER CYLINDER SUB-ASSY
1. Disconnect the 2 connectors (A4 and A6) from the brake master cylinder.
2. Check continuity between each of terminals A4 - 4 and A6 - 1, 2, 3, 4, 5, 6, 7, 8,9,10,11 and 12 of brake master cylinder connector.
  OK:
  
  Continuity
  
  HINT:
  
  Resistance of each solenoid at 20°C (68°F)
  
  SFRH, SFLH, SRRH, SRLH, SA3: 7.0 - 7.4 Ω
  
  SFRR, SFLR, SRRR, SRLR: 2.00 - 2.40 Ω
  
  SA1, SA2, STR:4.1 - 4.5 Ω
  
  Fig 1: Inspecting Brake Master Cylinder Sub-Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG : REPLACE BRAKE MASTER CYLINDER SUB-ASSY

OK : GO TO NEXT STEP
CHECK HARNESS AND CONNECTOR(BRAKE MASTER CYLINDER - SKID CONTROL ECU)
1. Check for open and short circuit in harness and connector between each solenoid and skid control ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : CHECK EACH CONNECTION IF SAME CODE IS STILL OUTPUT AFTER DTC DELETION (IF NORMAL, THE ECU MAY BE DEFECTIVE.)