BENDIX MC-12 MODULATOR CONTROLLER ASSY Informations techniques télécharger pdf (Page 31)

Miscellaneous Troubleshooting (continued)

Test Measurement

Stop Lamp Switch to Ground 9 to 17 VDC

For all tests below, take all measurements at ECU

harness connector pins in order to check wire harness

and sensor. Probe the connector carefully so that the

terminals are not damaged.

Dynamometer Test Mode (ATC/ESP Indicator Lamp

Continuously Illuminated)

1. Clear the dynamometer test mode by depressing and

releasing the blink code switch three times (or use an

off-board diagnostic tool).

2. Apply and release service brake, does lamp

extinguish?

3. Verify brake lamp switch is connected to ECU via hard

wire or J1939.

4. With service brake released, check for presence of stop

lamp bulb.

Stop Lamp Switch Test

1. With the service brake applied, measure the system

voltage (9 to 17 VDC) stop lamp switch input to ECU.

ABS Indicator Lamp

1. Verify diagnostic blink code switch is open when not

activated.

PMV Commons

1. Measure resistance between any common (PMV, TCV,

and Diff.) and voltage or ground.

Test Measurement

Any PMV, TCV, or Diff. Open Circuit (no continuity)

Common to Voltage

or Ground

Retarder Relay

1. Measure resistance between retarder disable output of

EC-60

™

controller and voltage / ground.

Test Measurement

Retarder disable to Voltage Open Circuit (no continuity)

or Ground

2. Verify vehicle has retarder relay.

3. Verify proper wiring from ECU to retarder relay.

Differential Lock Solenoid

1. Measure resistance between Diff lock solenoid and

voltage or ground.

Test Measurement

Diff. Lock Solenoid to Voltage Open Circuit (no continuity)

or Ground

Cab-mount ECU: Looking into

wire harness connector

Connector Pin PMV Location

4 TCV Common

X1 9 Stop Lamp Switch

18 Way 12 ABS WL Ground

15 ABS WL Interlock

17 Retarder

18 ABS WL

3 PMV Left Steer Axle Common

X2 6 PMV Right Steer Axle Common

18 Way 9 PMV Right Drive Axle Common

12 PMV Left Drive Axle Common

2 Diff Lock Solenoid

X3 3 Diff Lock Solenoid Common

15 Way 6 PMV Left Additional Axle Common

9 PMV Right Additional Axle Common

X4 11 SAS-60/YAS-60 Voltage Input

12 Way 10 SAS-60/YAS-60 Ground Input

Connector Pin PMV Location

SAS 2 Voltage Input

1 Ground Input

YAS 1 Voltage Input

2 Ground Input

Steering Angle Sensor and Yaw Rate/

Lateral Acceleration Sensor

1. Measure resistance between input voltage

and ground at the

sensor wiring harness

connector.

Test Measurement

Power and Ground Input 8 to 16 volts

Looking into wire harness connector

SAS Connector Yaw Connector

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 47 48

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BENDIX MC-12 MODULATOR CONTROLLER ASSY Informations techniques Page 31

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