BENDIX EC-60 ABS-ATC STD-PREM CONTROLLERS Introduction Manual page 27

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.
Stop Lamp Switch Test
1. With the service brake applied, measure the system
voltage (9 to 17 VDC) stop lamp switch input to ECU.
Test
Stop Lamp Switch to Ground 9 to 17 VDC
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.
Dynamometer Test Mode (ATC 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).
ABS Indicator Lamp
1. Verify diagnostic blink code switch is open when not
activated.
Cab-mount ECU: Looking into
wire harness connector
Connector Pin
4
X1 9
18 Way 12
15
17
18
3
X2 6
18 Way 9
12
2
X3 3
15 Way 6
9
Miscellaneous Troubleshooting
Measurement
PMV Location
TCV Common
Stop Lamp Switch
ABS WL Ground
ABS WL Interlock
Retarder
ABS WL
PMV Left Steer Axle Common
PMV Right Steer Axle Common
PMV Right Drive Axle Common
PMV Left Drive Axle Common
Diff Lock Solenoid
Diff Lock Solenoid Common
PMV Left Additional Axle Common
PMV Right Additional Axle Common
Retarder Relay
1. Measure resistance between retarder disable output of
EC-60 ™ controller and voltage / ground.
Test
Retarder disable to Voltage
or Ground
2. Verify vehicle has retarder relay.
3. Verify proper wiring from ECU to retarder relay.
PMV Commons
1. Measure resistance between any common (PMV, TCV,
and Diff.) and voltage or ground.
Test
Any PMV, TCV, or Diff.
Common to Voltage
or Ground
Differential Lock Solenoid
1. Measure resistance between Diff lock solenoid and
voltage or ground.
Test
Diff. Lock Solenoid to Voltage Open Circuit (no continuity)
or Ground
Frame-mount ECU: Looking into
wire harness connector
Connector Pin
X1 10
18 Way 12
5
X2 13
18 Way 14
15
16
8
X3 13
15 Way 14
15
16
Measurement
Open Circuit (no continuity)
Measurement
Open Circuit (no continuity)
Measurement
PMV Location
Retarder
ABS WL
Stop Lamp Switch
PMV Left Steer Axle Common
PMV Right Steer Axle Common
PMV Left Drive Axle Common
PMV Right Drive Axle Common
Diff. Lock Solenoid
TCV Common
Diff. Lock Solenoid Common
PMV Left Additional Axle Common
PMV Right Additional Axle Common
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