BENDIX M-21-M-22 ANTILOCK MOD ASSY Especificaciones descargar pdf (Pagina 21)

3 Diagnostics, Troubleshooting and Testing

Meritor WABCO Maintenance Manual MM-0112 (Revised 05-13)

Table A: Troubleshooting with Blink Code Diagnostics

Procedure System Response Action

Diagnostics Mode

Step I.

Turn ignition ON.

Possible responses:

ABS indicator lamp comes on momentarily then

goes out, indicating System OK.

No recognizable active faults in the ABS. No action

required.

ABS indicator lamp does not light, indicating

possible wiring fault or burned-out bulb.

Inspect wiring. Inspect bulb. Make necessary repairs.

ABS indicator lamp stays on, indicating:

앫 Fault, or faults, in the system.

앫 Sensor fault during last operation.

앫 Faults cleared from ECU, but vehicle not

driven.

앫 ECU disconnected.

Continue with blink code diagnostics. (Go to Step II.)

Drive vehicle — lamp will go out when vehicle

reaches 4 mph (6 km/h).

Connect ECU.

Step II.

Press and hold Blink Code

Switch for one second, then

release.

ABS indicator lamp begins flashing two-digit blink

code(s).

Determine if fault is active or stored:

Active Fault: Lamp will repeatedly display one code.

Stored Fault: Lamp will display code for each stored

fault then stop blinking. Faults will be displayed one

time only.

Step III.

Count the flashes to

determine the blink code.

First Digit: 1-8 flashes, Pause (1-1/2 seconds)

Second Digit: 1-6 flashes, Pause (4 seconds)

Find definition for blink code on blink code chart.

Step IV.

Turn ignition OFF.

Active Fault Make the necessary repairs. Repeat Step 1, Step II

and Step III until System OK, code (1-1) received.

Repair and record faults. Stored Fault Record for future reference.

NOTE: Last fault stored is first fault displayed.

Clear Mode

Step V.

Turn ignition ON.

Clear Faults from memory:

Press and hold blink code

switch for at least three

seconds, then release.

ABS indicator lamp flashes eight times. All stored faults successfully cleared.

Turn ignition OFF.

Eight flashes not received. Active faults still exist, repeat Step I through Step V.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 97 98

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