BENDIX EC-60 ABS-ATC STD-PREM CONTROLLERS Troubleshooting Diagnostic Trouble Codes Miscellaneous

Troubleshooting Diagnostic Trouble Codes: Miscellaneous

1st. Blink

Code Location

12Miscellaneous

2nd. Diagnostic

Blink Trouble Code Code Description

1Stop Lamp Switch Not Detected

Repair Information

ECU has not detected the presence of the stop lamp switch since ignition power was applied (note that stop lamp switch input may be applied to the EC-60™controller using either hardwire input or J1939). Apply and release service brake. Check for brake switch input into ECU (see system wiring schematic). With service brake released, check for presence of the stop lamp bulb. With service brake applied, verify system voltage is now present at the stop lamp switch input to the ECU. Check for damaged wiring between ECU, stop lamp switch and bulb. Check for corroded or damaged connectors. Check for damaged or reversed J1939 wiring. Check for corroded or damaged connectors on J1939 link. Verify presence of engine ECU on the J1939 link. Verify ECU configuration.

2Stop Lamp Switch Defective

Apply and release service brake. Check for brake switch input into ECU (see system wiring schematic). With service brake released, check for presence of the stop lamp bulb. With service brake applied, verify system voltage is now present at the stop lamp switch input to the ECU. Check for damaged wiring between ECU, stop lamp switch and bulb. Check for corroded or damaged connectors. Check for damaged or reversed J1939 wiring. Check for corroded or damaged connectors on J1939 link. Verify presence of engine ECU on the J1939 link. Verify ECU configuration.

3Dynamometer Test Mode

4Retarder Relay Open Circuit or Shorted to Ground

5Retarder Relay Circuit Shorted to Voltage

6ABS Indicator Lamp Circuit Fault

7PMV Common Shorted to Ground

8PMV Common Shorted to Voltage

9ATC Disabled to Prevent Brake Fade

10Tire Size Out of Range (Front to Rear)

11Wheel Speed Sensors Reversed on an Axle

ECU has been placed in the Dynamometer Test Mode by either the diagnostic blink code switch or a hand-held or PC-based diagnostic tool. ATC is disabled.

Verify vehicle contains a retarder relay. Verify ECU configuration. Check wiring between ECU and retarder relay. Verify no continuity between retarder disable output of EC-60™controller and ground. Verify condition and wiring of the retarder relay.

Check wiring between ECU and retarder relay. Verify no continuity between retarder disable output of EC-60™controller and voltage. Verify condition and wiring of the retarder relay.

Check operation of diagnostic blink code switch. Check wiring of diagnostic blink code switch, ABS WL, and ABS WL relay (frame ECUs only). Verify ABS WL ground input (cab ECUs only).

Verify no continuity between the CMN of all PMVs, TCV, and Diff Lock Solenoid and ground. Check for corroded/damaged wiring or connectors between the ECU and CMN of all PMVs, TCV, and Diff Lock Solenoid.

Verify no continuity between the CMN of all PMVs, TCV, and Diff Lock Solenoid and voltage. Check for corroded/damaged wiring or connectors between the ECU and CMN of all PMVs, TCV, and Diff Lock Solenoid.

ATC is temporarily disabled to prevent excessive heating of the foundation brakes.

Verify correct tire size as desired. Verify proper tire inflation. Verify correct number of exciter ring teeth. Verify that the ECU has the proper tire size settings.

Sensors are reversed (left to right) on one of the axles. Verify proper installation, connection, and wiring of the sensors.

12	Diff. Lock Solenoid Shorted	Verify no continuity between the Diff Lock Solenoid and ground. Check for corroded/
	to Ground or Open Circuit	damaged wiring or connectors between the ECU and Diff Lock Solenoid.
13	Diff. Lock Solenoid	Verify no continuity between the Diff Lock Solenoid and voltage. Check for corroded/
	Shorted to Voltage	damaged wiring or connectors between the ECU and Diff Lock Solenoid.

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