C1251 Pump Motor
description
Transcript of C1251 Pump Motor
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C96169
Battery
FL MAIN
Skid Control ECU with Actuator
B L1
ALT ABS No.2Engine Room R/B and J/B
11A
WB
S1
S11
24+BM
1 2 1 2
GND2
GND1
S123
WB
WB
EA
05330DIAGNOSTICS ABS WITH EBD SYSTEM (April, 2003)
495Author: Date:
2004 COROLLA (RM1037U)
DTC C1251/51 PUMP MOTOR IS LOCKED/OPEN CIRCUITIN PUMP MOTOR GROUND
CIRCUIT DESCRIPTIONDTC No. DTC Detecting Condition Trouble Area
C1251/51ABS actuator pump motor is not operating normally duringinitial check.
ABS pump motor
WIRING DIAGRAM
057UL04
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C58919GND2() +BM(+)
DIAGNOSTICS ABS WITH EBD SYSTEM (April, 2003)05331
496Author: Date:
2004 COROLLA (RM1037U)
INSPECTION PROCEDUREHINT:Start the inspection from step 1 in case of using the handheld tester and start from step 2 in case of notusing handheld tester.
1 INSPECT BRAKE ACTUATOR ASSY
(a) Select the DATALIST mode on the handheld tester.(b) Check the operation sound of the ABS pump motor when operating it with the handheld tester.
OK:The operation sound of the ABS pump motor should be heard.
OK PROCEED TO NEXT CIRCUIT INSPECTIONSHOWN ON PROBLEM SYMPTOMS TABLE
NG
2 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(+BM TERMINAL VOLTAGE)(a) Disconnect the skid control ECU connector.(b) Measure the voltage between terminal +BM (24) and
GND (23) of skid control ECU harness side connector.OK:The operation sound of the ABS pump motor shouldbe heard.
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE BRAKE ACTUATOR ASSY