Brake Actuator: Inspection
- CHECK BRAKE ACTUATOR ASSEMBLY
- Measure the resistance according to the value(s) in the table below.
HINT:
Perform the check with the actuator at the lowest temperature possible.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHARTTester Connection Condition Specified Condition 20 (SMC1) - 19 (BS1) Always 15.3 to 25.0 Ω 6 (SMC2) - 7 (BS2) 8 (FRA+) - 5 (FRA-) 3.6 to 6.0 Ω 22 (FRR+) - 21 (FRR-) 13 (FLA+) - 14 (FLA-) 27 (FLR+) - 28 (FLR-) 12 (RRA+) - 11 (RRA-) 10 (RLA+) - 9 (RLA-) 26 (RRR+) - 25 (RRR-) 4.4 to 7.0 Ω 24 (RLR+) - 23 (RLR-) If the result is not as specified, replace the brake actuator.
- Measure the resistance according to the value(s) in the table below.
- CHECK BRAKE ACCUMULATOR PUMP
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHARTTester Connection Condition Specified Condition A2 (BM1) - A4 (GND1) Always 10 Ω or less B2 (BM2) - A4 (GND1) A2 (BM1) - B2 (BM2) Below 1 Ω A4 (GND1) - B1 (GND2) A2 (BM1) - A1 (MTT) 950 to 1050 Ω B2 (BM2) - A1 (MTT) If the result is not as specified, replace the brake accumulator pump.
- Measure the resistance according to the value(s) in the table below.