Service manual

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TC Series Hydraulic Brake ABS System

030.1-17

Ignition Key On to determine

ABS blink code fault

Ignition Key off to test system (except where noted)

1 2 3 4 5

Fault

Code

Problem Area Connector Pins to be

Tested

Correct Volt Ohm

Meter Reading

Action

3-1 Right Front

sensor—Air gap

9-pin 4 and 5 Greater than 0.2

volts AC at 30 rpm

(Rotate wheel ½

revolution per

second)

Check for sensor

adjustment.

Check for excessive

wheel bearing endplay.

Repair or replace as

needed.

3-2 Left Front

sensor—Air gap

9-pin 1 and 2

3-3 Right Rear

sensor—Air gap

9-pin 3 and 6

3-4 Left Rear

sensor—Air gap

9-pin 7 and 8

4-1 Right Front

sensor—Electrical fault

9-pin 4 and 5 500-2000 ohms Check electrical

resistance of affected

sensor and wiring at

ECU connector and at

harness plugs. Repair

or replace as needed.

4-2 Left Front

sensor—Electrical fault

9-pin 1 and 2

4-3 Right Rear

sensor—Electrical fault

9-pin 3 and 6

4-4 Left Rear

sensor—Electrical fault

9-pin 7 and 8

5-1 Right Front

wheel—Erratic wheel

speed

--- --- --- Check for tire size

mismatch or tooth

wheel difference.

Check sensor, sensor

cable, and connector for

intermittent contact.

Repair or replace as

needed.

5-2 Left Front

wheel—Erratic wheel

speed

5-3 Right Rear

wheel—Erratic wheel

speed

5-4 Left Rear

wheel—Erratic wheel

speed

7-3 Retarder Relay --- --- --- Verify proper

connections to relay.

(see wiring diagram).

7-4 ABS Warning Lamp --- --- -- Check bulb. Repair or

replace as needed.

Table 3—D Version Hydraulic ABS Blink Codes (continued)