BENDIX BW2187 Manuel D’Utilisation

6

3

Mod 1 Shorted to Ground

6

9

Mod 2 Shorted to Ground

6

4

Mod 1 Shorted Solenoid

6

10

Mod 2 Shorted Solenoid

6

5

Mod 1 Shorted to VBAT

6

11

Mod 2 Shorted to VBAT

6

6

Mod 1 Shorted Between

6

12

Mod 2 Shorted Between

7

1

Trailer ABS - Warning Lamp
Shorted to VBAT

7

2

Trailer ABS Warning Lamp Open

7

3

Trailer ABS Warning Lamp
Shorted to Ground

2

9

LF Sensor High Frequency Noise

3

9

RF Sensor High Frequency Noise

4

9

LR Sensor High Frequency Noise

5

9

RR Sensor High Frequency Noise

2

10

LF Sensor Wobble Run

3

10

RF Sensor Wobble Run

4

10

LR Sensor Wobble Run

5

10

RR Sensor Wobble Run

4

11

LR Sensor Gross Mismatch

5

11

RR Sensor Gross Mismatch

2

12

LF Sensor Abnormal Speed

3

12

RF Sensor Abnormal Speed

4

12

LR Sensor Abnormal Speed

5

12

RR Sensor Abnormal Speed

6

1

Mod 1 Lock Time Out   

6

7

Mod 2 Lock Time Out

6

2

Mod 1 Open / Shorted to GND

6

8

Mod 2 Open / Shorted to GND

Verify condition and retention force of sensor clips. Check for corroded or damaged 
sensor and ECU wiring and connectors. Verify no continuity from sensor leads to
ground. Verify sensor leads are twisted pair.

Sensor output intermittent or excessive wobble in exciter ring. Verify condition of tone
ring mounting and teeth. Verify proper adjustment of wheel bearings. Adjust speed 
sensor to contact tone ring. Rotate wheel and verify minimum 0.8 volts AC sensor output
@ 1 RPS. Verify condition and retention force of sensor clip. Verify proper sensor lead
routing and clamping.

Tire Size Mismatch. Verify correct tire size as desired. Verify proper tire inflation. Verify
proper number of tone ring teeth per sensed wheel. Verify proper wheel rolling radius
setting in ECU.

Adjust speed sensor to contact tone ring. Verify proper number of tone ring teeth per
sensed wheel. Rotate wheel and verify minimum 0.8 volts AC sensor output @ 1 RPS.
Verify condition and retention force of sensor clip. Verify proper sensor lead routing and
clamping.

No wheel response to ABS command. Verify proper modulator activation with brake
pressure applied, at power-up (Chuff Test) and/or using diagnostic tool. Wiring to modu-
lator may be reversed. Possible slow brake release. Check for dragging brakes, dry
bearings, faulty return springs, parking brake system faults, restricted brake air lines,
over adjusted slacks, out of round drums or damaged/ loose tone rings.

Check for corroded or damaged modulator wiring and connections. Verify 7.0 to 10.0
OHMS across HOLD/COMMON. Verify 7.0 to 10.0 OHMS across EXHAUST/ 
COMMON. Verify 14.0 to 20.0 OHMS across EXHAUST/HOLD. Verify no continuity from 
modulator leads to ground.

Check for corroded or damaged modulator wiring and connections. Verify no continuity 
from modulator leads to ground. Verify 7.0 to 10.0 OHMS across HOLD/COMMON. Verify
7.0 to 10.0 OHMS across EXHAUST/COMMON. Verify 14.0 to 20.0 OHMS across
EXHAUST/HOLD.

Check for corroded or damaged modulator wiring and connections. Verify 7.0 to 10.0
OHMS across HOLD/COMMON. Verify 7.0 to 10.0 OHMS across EXHAUST/COMMON.
Verify 14.0 to 20.0 OHMS across EXHAUST/HOLD.

Check for corroded or damaged modulator wiring and connections. Verify +12V is not
measured at any modulator lead. Verify 7.0 to 10.0 OHMS across HOLD/COMMON. Verify
7.0 to 10.0 OHMS across EXHAUST/COMMON. Verify 14.0 to 20.0 OHMS across
EXHAUST/HOLD.

Check for corroded or damaged modulator wiring and connections. Verify 7.0 to 10.0
OHMS across HOLD/COMMON. Verify 7.0 to 10.0 OHMS across EXHAUST/COMMON.
Verify 14.0 to 20.0 OHMS across EXHAUST/HOLD.

Check ABS warning lamp wiring and connections. Verify proper illumination of
warning lamp at power-up.

2

2 Sensors

3

4 Sensors

1

1 Modulator (Dolly-Axle control)

2

1 Modulator (Axle control)

3

2 Modulators (Axle control)

4

2 Modulators (Side control)