Inspection Procedure

HINT:

When C1241/41 is output along with C0278/11, inspect and repair the trouble areas indicated by C1241/41 first (see DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE  ).

1. INSPECT FUSE (ABS/VSC NO. 2 FUSE) 
   1. Remove the ABS/VSC No. 2 fuse from the engine room R/B.
   2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying ABS/VSC No. 2 Fuse Location

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   ABS/VSC NO. 2 FUSE RESISTANCE
   
   

   ABS/VSC No. 2 fuse

   Below 1 Ω (Continuity)

   1. NG: CHECK FOR SHORT IN ALL HARNESS AND CONNECTOR CONNECTED TO FUSE AND REPLACE FUSE 
   2. OK: Go to next step. 
2. INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (+BS TERMINAL VOLTAGE AND GND CIRCUIT) 
   1. Disconnect the skid control ECU connector.
   2. Measure the voltage according to the value(s) in the table below.
      Fig 2: Identifying Skid Control ECU Connector Terminals +BS & GND1

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION - VOLTAGE
      
      

      Tester Connection	Condition	Specified Condition
      A34-31 (+BS) - Body ground	Always	10 to 14 V

   3. Measure the resistance according to the value(s) in the table below. (See Fig 2)

   Standard: 

   TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE
   
   

   Tester Connection	Specified Condition
   A34-32 (GND1) - Body ground	Below 1 Ω

   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (+BS, GND1 CIRCUIT) 
   2. OK: Go to next step. 
3. RECONFIRM DTC (SEE  DTC CHECK/CLEAR   ) 
   1. Clear the DTC.
   2. Start the engine.
   3. Check that the same DTC is recorded.

   HINT:

   Reinstall the sensors, connectors, etc. and restore the vehicle to its prior conditions before rechecking for DTCs.

   Result: 

   RESULT
   
   

   DTC is not output	A
   DTC is output	B

   HINT:

   • If the normal system code is output (the malfunction code is not output), slightly jiggle the connectors, wire harnesses, and fuses of the ABS & TRACTION actuator assy. Make sure that no DTCs are output.
   • If any DTCs are output while jiggling a connector or wire harness of the ABS & TRACTION actuator (skid control ECU), inspect and repair the connector or wire harness.
   1. B: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE  REPLACEMENT  ) 
   2. A: END 

   HINT:

   It is suspected that the DTCs were output due to a bad connection of the connector terminal.