DTC C1341/62: Front Hydraulic System RH Malfunction; DTC C1342/63: Front Hydraulic System LH Malfunction; DTC C1343/64: Rear Hydraulic System RH Malfunction; DTC C1344/65: Rear Hydraulic System LH Malfunction: Procedure

1. Check that there is no fluid leakage in the brake line between the brake actuator and the wheel cylinder which is the cause of DTCs.
2. Check for a brake fluid leak from the connection between the accumulator pump and brake actuator. Refer to DTC C1202/68: Master Reservoir Level Malfunction .
3. Check that the brake is not dragging.

   OK

   There is no fluid leakage or dragging.

NG → REPAIR OR REPLACE APPLICABLE PART 

OK: Go to next step 

1. Bleed the air from the front and rear brake systems. Refer to REPLACEMENT .

NEXT: Go to next step 

1. Disconnect the A19 and A21 ECU connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A19-17 (FRA+) - Body ground	Always	10 kΩ or higher
   A19-18 (FRA-) - Body ground	Always	10 kΩ or higher
   A19-4 (FRR+) - Body ground	Always	10 kΩ or higher
   A19-3 (FRR-) - Body ground	Always	10 kΩ or higher
   A19-19 (RLA+) - Body ground	Always	10 kΩ or higher
   A19-20 (RLA-) - Body ground	Always	10 kΩ or higher
   A19-34 (RLR+) - Body ground	Always	10 kΩ or higher
   A19-33 (RLR-) - Body ground	Always	10 kΩ or higher
   A21-17 (FLA+) - Body ground	Always	10 kΩ or higher
   A21-18 (FLA-) - Body ground	Always	10 kΩ or higher
   A21-4 (FLR+) - Body ground	Always	10 kΩ or higher
   A21-3 (FLR-) - Body ground	Always	10 kΩ or higher
   A21-20 (RRA+) - Body ground	Always	10 kΩ or higher
   A21-21 (RRA-) - Body ground	Always	10 kΩ or higher
   A21-34 (RRR+) - Body ground	Always	10 kΩ or higher
   A21-33 (RRR-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the A27 actuator connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A27-5 (FRA-) - Body ground	Always	10 kΩ or higher
   A27-6 (SMC2) - Body ground	Always	10 kΩ or higher
   A27-7 (BS2) - Body ground	Always	10 kΩ or higher
   A27-8 (FRA+) - Body ground	Always	10 kΩ or higher
   A27-9 (RLA-) - Body ground	Always	10 kΩ or higher
   A27-10 (RLA+) - Body ground	Always	10 kΩ or higher
   A27-11 (RRA-) - Body ground	Always	10 kΩ or higher
   A27-12 (RRA+) - Body ground	Always	10 kΩ or higher
   A27-13 (FLA+) - Body ground	Always	10 kΩ or higher
   A27-14 (FLA-) - Body ground	Always	10 kΩ or higher
   A27-19 (BS1) - Body ground	Always	10 kΩ or higher
   A27-20 (SMC1) - Body ground	Always	10 kΩ or higher
   A27-21 (FRR-) - Body ground	Always	10 kΩ or higher
   A27-22 (FRR+) - Body ground	Always	10 kΩ or higher
   A27-23 (RLR-) - Body ground	Always	10 kΩ or higher
   A27-24 (RLR+) - Body ground	Always	10 kΩ or higher
   A27-25 (RRR-) - Body ground	Always	10 kΩ or higher
   A27-26 (RRR+) - Body ground	Always	10 kΩ or higher
   A27-27 (FLR+) - Body ground	Always	10 kΩ or higher
   A27-28 (FLR-) - Body ground	Always	10 kΩ or higher

NG → REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

NG → See step   7 

OK: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Repeat the braking test under malfunction conditions recreated based on the "FREEZE FRAME DATA". Refer to FREEZE FRAME DATA .
3. Check if the same DTCs are recorded. Refer to DTC CHECK / CLEAR .

   HINT: 

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

   RESULT
   
   

   Result	Proceed to
   DTCs (C1341/62, C1342/63, C1343/64 and C1344/65) are not output	A
   DTCs (C1341/62, C1342/63, C1343/64 and C1344/65) are output	B

B → See step   8 

A → END