51 ABS Pump Motor Lock - caphector.com

ABS Actuator with ECU. ALT. 24. W-B. B. B. ABS. EC. Fusible Link Block. 5. A4. A4. A4. A4. -. DIAGNOSTICS. ANTI-LOCK BRAKE SYSTEM. DI-227. 397. Author :.
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DI-227 DIAGNOSTICS

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ANTI-LOCK BRAKE SYSTEM DI6SR-04

DTC

C1251 / 51

ABS Pump Motor Lock

CIRCUIT DESCRIPTION DTC No. C1251 / 51

DTC Detecting Condition

Trouble Area

ABS actuator pump motor is not operating normally during initial check.

ABS pump motor

WIRING DIAGRAM ABS Actuator with ECU Fusible Link Block ALT

ABS

5

24 A4

B

+BM

B

2 A4 +BS

BR

1 A4 GND1

W-B

23 A4

GND2

Battery EC

F09225

2002 ECHO (RM884U)

Author:

Date:

397

DI-228 DIAGNOSTICS

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ANTI-LOCK BRAKE SYSTEM

INSPECTION PROCEDURE 1

Check ABS pump motor operation.

PREPARATION: (a) Connect the TOYOTA hand-held tester to the DLC3. (b) Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON. (c) Select the ACTIVE TEST mode on the TOYOTA hand-held tester. CHECK: Check the operation sound of the ABS pump motor when operating it with the TOYOTA hand-held tester. OK: The operation sound of the ABS pump motor should be heard. NG

Check and replace ABS actuator assembly.

OK

Proceed to next circuit inspection shown in problem symptoms chart (See page DI-208 ).

2002 ECHO (RM884U)

Author:

Date:

398