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BENDIX Intellipark Service Data
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BENDIX Intellipark Service Data

BENDIX Intellipark Service Data

Electronic park brake (epb) system
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Bendix
Intellipark
®
NOTE: Both towing and non-towing units may have various switch configurations (vertical and horizontal) and
mounting brackets. The DECU PP variant is available in both PP-Right and PP-Left configurations.
–
Figure 1
Figure 1
Bendix
Bendix
Dash Electronic Control Unit (DECU) Variants
Dash Electronic Control Unit (DECU) Variants
® ®
Electronic Park Brake (EPB) System
®
Dash Electronic Control Unit (DECU)
Towing Vehicle Variant
(similar to the Bendix
Dash Electronic Control Unit (DECU)
PP-Left Non-Towing Vehicle Variant
(similar to the Bendix
Dash Electronic Control Unit (DECU)
PP-Right Non-Towing Vehicle Variant
(similar to the Bendix PP-DC Park Control Valve)
MV-3
Dash Control Valve)
®
®
PP-DC
Park Control Valve)
®
®
1

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Summary of Contents for BENDIX Intellipark

  • Page 1 Dash Electronic Control Unit (DECU) PP-Right Non-Towing Vehicle Variant (similar to the Bendix PP-DC Park Control Valve) NOTE: Both towing and non-towing units may have various switch configurations (vertical and horizontal) and mounting brackets. The DECU PP variant is available in both PP-Right and PP-Left configurations.
  • Page 2 Proper integration of the Intellipark EPB system by the vehicle OEM provides the following vehicle operation functions: •...
  • Page 3 For proper operation of operations, and allows trailer emergency brake control. the Intellipark EPB system, all other components of the Upon pulling the red switch of the DECU, the PVM park brake system must be functioning as designed.
  • Page 4 Drivers and maintenance personnel must is initiated. read and understand the contents of the Intellipark This function is intended to fulfill emergency brake owner's manual before operating a vehicle equipped...
  • Page 5 The Intellipark trailer(s) parked, based on inputs from vehicle speed EPB system provides the ability to detect some...

  • Page 6: System Components

    Figure 2 – DECU Variants activation. Further, under no circumstances should the driver or others use the Intellipark switches as a handle, grab point or step point, or apply more than normal finger force to the switches. While the Intellipark...
  • Page 7 These ribs identify the PVM as a genuine Bendix product. If the OE or ® service new PVM does not contain these ribs, it is not a genuine Bendix product. Part Number Label Mounting Hole Secondary Supply Port...
  • Page 8 1. With full system pressure and all safety interlocks For information on dash valve trip pressures, refer to satisfied, push both the red and yellow switches TCH-003-051, Bendix Dash Valve Trip Pressure/DOT and allow the brakes on the tractor and trailer to Inspections, on B2Bendix.com.
  • Page 9 'backup' mode. The integrated display monitors the Intellipark EPB IMPORTANT system and will notify the driver if an Intellipark feature is active. When an Intellipark feature is active, The PVM must be mounted as described in this section...
  • Page 10 Refer to Table 1 for examples of integrated display icons. These icons are representative only and may vary by OEM. The icons in Table 1 will appear on the integrated display if the particular interlock is not satisfied, and the driver will not be able to unpark unless they satisfy the respective interlock.

  • Page 11: Special Modes Of Operation

    Limp Home Mode) is intended to allow a driver to ensure that the Intellipark EPB system will not change operate a vehicle that has a failure in one of the inputs from its current state and all advanced features shall to the park brake release interlock (e.g.: if the door...
  • Page 12 Bobtail Mode: When the towed unit channel of the Ignition key is on » Intellipark EPB system is evacuated, the two red LED displays on the trailer air supply (red) switch will be Vehicle speed is < 4 mph (6 kph) »...
  • Page 13 Vehicle Configurations: The Intellipark system ® ® In the event an Intellipark-equipped vehicle must be provides parking capability for commercial vehicles towed, there are two (2) ways to tow the vehicle: (tractors, trucks, and buses) that utilize air brakes. It is available in various models to support a wide range Mechanically cage the spring brakes.
  • Page 14 OPERATIONAL CONDITIONS: NORMAL The LEDs on the Dash Electronic Control Unit (DECU) are one indicator the Bendix Intellipark Electronic Parking ® ® Brake (EPB) system is performing under normal operating conditions. Refer to the applicable Operator's Manual on B2Bendix.com for interlocks and all parking and unparking operation.
  • Page 15 Refer to Table 3 for the Bendix Intellipark Electronic ® ® Parking Brake (EPB) system's performance under normal operating conditions. Intellipark Spring Brake Vehicle Parking ® Switch Driver Action System Reaction Reaction State Trailer Air Supply Pushes Red Switch Applies air to the...
  • Page 16 PVM pressure sensor has been detected. Blinking Blinking Both LEDs blinking indicates the state of the Intellipark towed vehicle system cannot be determined by the DECU. Immediately chock the wheels and have the system serviced as soon as possible.
  • Page 17 Refer to Table 5 for the Bendix Intellipark Electronic ® ® Parking Brake (EPB) system's fallback modes. Missing / Corrupted Input Fallback Mode Ignition: Loss of Input • System fault displayed on LEDs • Dash Electronic Control Unit (DECU) power-up via CAN wake-up •...
  • Page 18 Missing / Corrupted Input Fallback Mode J1939: All Data Lost • System fault displayed on LEDs • Power and towed unit park status is available • Park brake release interlock available • Rollaway Mitigation not available • Auto Trailer Brake Release not available •...
  • Page 19 If the system has faulted, the capability of the Intellipark EPB system may be reduced. Drivers must not rely on If the Intellipark EPB system is reporting a fault and the the Intellipark EPB system to automatically park the vehicle must be operated, perform the following steps: vehicle.
  • Page 20 LEDs will blink. Loss of features is communicated through either the vehicle instrument cluster or a standalone integrated display. Diagnostic information is available by interfacing with the Intellipark EPB system using the Bendix ACom ® ®...
  • Page 21 Select Gear) • This DTC should resolve once the cause is addressed. J1939 CAN Transmission Intellipark unable to • Check high and low CAN wires, Fault, J1 Pin 13 and 15 broadcast on CAN network J1 Pin 13 and 15, and the CAN...
  • Page 22 Description Cause Corrective Action J1939 EBC2 Message Front axle speed CAN data • Contact engine manufacturer or - Erratic, Intermittent, not received when expected OEM for details on the source of or Incorrect (Front Axle or received with error the message and fix. Speed) •...
  • Page 23 Description Cause Corrective Action 1121 J1939 EBC1 Message - EBC1 CAN data not • Contact OEM for details on the Data Not Available (EBS received when expected source of the message and fix. Brake Switch) • This DTC should resolve once the cause is addressed.
  • Page 24 Description Cause Corrective Action 3510 Internal ECU Issue Trailer pressure sensor • Verify the trailer pressure sensor SPN3510 FMI3 supply wire reporting shorted is wired correctly, J2 Pins 2-4 to to a high source trailer pressure sensors on valve assembly. •...
  • Page 25 Description Cause Corrective Action 3511 Occupancy Sensor 1 Excess noise or invalid • Check resistance in occupancy Fault J1 Pin 6 and 5 signal provided from the sensor wires (J1 Pin 5/6) match. hard wired input • Check for damage or shorts from J1 Pins 5/6 to the resistor network located in the doors or seat belts.
  • Page 26 Description Cause Corrective Action 3512 Occupancy Sensor 2 Excess noise or invalid • Check resistance in occupancy Fault J1 Pin 16 and 7 signal provided from the sensor wires (J1 Pin 7/16) match. hard wired input • Check for damage or shorts from J1 Pins 7/16 to the resistor network located in the doors or seat belts.
  • Page 27 Description Cause Corrective Action 3514 Trailer Pressure Sensor Trailer pressure sensor • Verify the trailer pressure sensor Supply - J2 Pin 2/3 supply short to ground is wired correctly, J2 Pins 2-4 to Shorted to Ground trailer pressure sensors on valve assembly.
  • Page 28 Description Cause Corrective Action 7902 Battery 1 Connection Battery input 1 low or • Check battery voltage; if low, Shorted to Ground, J1 disconnected charge battery. Pin 18 • Check battery connections from J1 Pin 18/1 to fuse panel for opens or bad connections.
  • Page 29 Description Cause Corrective Action 8621 Internal ECU Issue DECU incorrect DATA • If the DECU just received a software update, reattempt or revert to previous software version if possible. • Cycle the battery and/or place the key in the off position for 30 seconds.
  • Page 30 Description Cause Corrective Action 516101 Tractor Park Brake Tractor exhaust wire noise or • Check Pin 8 on DECU J1 Exhaust Valve - J1 Pin 8 short to another source connector for short to or bad Harness Related Fault connection; if an issue is found, re-pin at that location.
  • Page 31 Description Cause Corrective Action 516101 Tractor Park Brake Tractor exhaust wire open • Check Pin 8 on DECU J1 Exhaust Valve - J1 Pin 8 circuit connector for being disconnected Open Circuit or loose; if a poor connection is found, re-pin at that location. •...
  • Page 32 Description Cause Corrective Action 516102 Tractor Park Brake Tractor deliver wire short to • Check Pin 12 on DECU J1 Deliver Valve - J1 Pin 12 ground or low source connector for short to ground; if Shorted to Ground an issue is found, re-pin at that location.
  • Page 33 Description Cause Corrective Action 516103 Trailer Park Brake Trailer exhaust wire short to • Check Pin 7 on DECU J2 Exhaust Valve - J2 Pin 7 battery or high source connector for short to a high Shorted to Battery source; if an issue is found, re- pin at that location.
  • Page 34 Description Cause Corrective Action 516104 Trailer Park Brake Trailer deliver wire noise or • Check Pin 11 on DECU J2 Deliver Valve - J2 Pin 11 short to another source connector for short to or bad Harness Related Fault connection; if an issue is found, re-pin at that location.
  • Page 35 Description Cause Corrective Action 516104 Trailer Park Brake Trailer deliver wire open • Check Pin 11 on DECU J2 Deliver Valve - J2 Pin 11 circuit connector for being disconnected Open Circuit or loose; if a poor connection is found, re-pin at that location. •...
  • Page 36 Description Cause Corrective Action 516105 Tractor Solenoid Tractor common wire short • Check Pin 10 on DECU J1 Common - J1 Pin 10 to ground or low source connector for short to ground; if Shorted to Ground an issue is found, re-pin at that location.
  • Page 37 Description Cause Corrective Action 516106 Trailer Solenoid Common Trailer common wire short to • Check Pin 9 on DECU J2 - J2 Pin 9 Shorted to battery or high source connector for short to a high Voltage source; if an issue is found, re- pin at that location.
  • Page 38 Description Cause Corrective Action 516107 High Side Relay - ECU or wiring damage • Check Pin 10 on J1 and Pin 9 on Shorted to Battery J2 connector for short to a high source; if an issue is found, re- pin at that location.
  • Page 39 Cause Corrective Action 516112 Intellipark Tractor LED Possible ECU damage • Power Intellipark off then back Failure on; observe LEDs as they perform the bulb check at start- up (three [3] seconds on, then two [2] seconds off). Verify all LEDs turn on and off as expected.
  • Page 40 Cause Corrective Action 516113 Intellipark Trailer LED Possible ECU damage • Power Intellipark off then back Failure on; observe LEDs as they perform the bulb check at start- up (three [3] seconds on, then two [2] seconds off). Verify all LEDs turn on and off as expected.
  • Page 41 Description Cause Corrective Action 516115 Internal ECU Issue Tractor switch disagreement, • Check that the yellow tractor noise or incorrect position switch is in the neutral position when no one is pushing or pulling the switch. • If the switch is not in the neutral position, determine if the switch is stuck in another position due to impeded movement...
  • Page 42 Description Cause Corrective Action 516115 Internal ECU Issue Tractor switch disagreement, • Check that the yellow tractor noise or incorrect position switch is in the neutral position when no one is pushing or pulling the switch. • If the switch is not in the neutral position, determine if the switch is stuck in another position due to impeded movement...
  • Page 43 Description Cause Corrective Action 516116 Internal ECU Issue Trailer switch disagreement, • Check that the red trailer switch noise or incorrect position is in the neutral position when no one is pushing or pulling the switch. • If the switch is not in the neutral position, determine if the switch is stuck in another position due to impeded movement...
  • Page 44 Description Cause Corrective Action 516116 Internal ECU Issue Trailer switch disagreement, • Check that the red trailer switch noise or incorrect position is in the neutral position when no one is pushing or pulling the switch. • If the switch is not in the neutral position, determine if the switch is stuck in another position due to impeded movement...
  • Page 45 Description Cause Corrective Action 516117 ECU Unable to Invalid or no speed data • Verify there are no open wires or Determine Appropriate received on CAN shorts on the 2 CAN inputs, Vehicle Motion State Pins 13/15 on J1 and Pins 6/8 on J2 connector.
  • Page 46 Description Cause Corrective Action 516120 Internal ECU Issue ECU damage • Disconnect and reconnect power SPN516120 FMI2 to the DECU; this should heal the DTC if it is active. • If the DTC becomes or remains active, replace the ECU. •...
  • Page 47 • Verify the ABS is broadcasting for source address 0B on CAN bus and that intellipark is connected when the vehicle is keyed on. • This DTC should resolve once it receives CAN data from SA 0B.
  • Page 48 DECU side and at the backbone. • Verify the engine is broadcasting for source address 00 on CAN bus and that intellipark is connected when the vehicle is keyed on. • This DTC should resolve once it receives CAN data from SA 0B.
  • Page 49 • This DTC should resolve once the cause is addressed. If the DTC persists, replace the ECU. 516129 Maintenance Mode DECU in maintenance mode • Use Bendix ACom ® ® ™ Active Diagnostic Software to exit maintenance mode; exit...
  • Page 50 30 seconds. • This DTC should resolve once the cause is addressed. 516141 Retrofit Installation Mode DECU in retrofit mode • Use Bendix ACom ® ® ™ Active Diagnostic Software to exit retrofit mode. •...
  • Page 51 DECU in Limp home mode • Unpark then park the tractor and the DECU will exit this mode. • Key off the vehicle until Intellipark turns off. The next time the DECU turns on, it should not be in limp home mode. •...
  • Page 52 DECU side and at the backbone. • Verify the engine is broadcasting for the source address 00 on CAN bus that Intellipark is connected to when the vehicle is keyed on. • This DTC should resolve once the CAN data is received from SA 0B.
  • Page 53 Description Cause Corrective Action 516154 J1939 CAN Stop Lamp Stop mismatch between • Check the park brake release Switch Out of Calibration brake switch signal on request inhibit interlock status on chassis and party CAN the chassis and party CAN. •...
  • Page 54 • Contact the OEM for further assistance. 524032 J1939 CAN Transmission Intellipark unable to • Check the high and low CAN Fault broadcast on CAN network wires, J1 Pin 13 and 15, and the CAN backbone connections for a short to ground, power, or each other.
  • Page 55 ELECTRICAL INTERFACE DETAILS See Figures 7 and 8 for the electrical interface details. J1939 J1939 Backbone Backbone Backup Battery Primary Stop Lamp Switch Battery (discrete option if not available on CAN) Fuse Panel Passenger Door Switch (discrete option if not Door Switch available on CAN) (discrete option if...
  • Page 56 J1939 J1939 Backbone Backbone Backup Battery Primary Stop Lamp Switch Battery (discrete option if not available on CAN) Fuse Panel Passenger Door Door Switch Switch (discrete (discrete option if option if not not available on available on CAN) CAN) Figure 8 – Solo Vehicle Variant...
  • Page 57 Occupancy Sensors NOTE: Bendix does not supply the connectors listed. The Dash Electronic Control Unit (DECU) supports PVM Feedback Connections occupancy sensors to determine if the driver's seat is The Park Valve Module (PVM) contains the exhaust and occupied. delivery solenoids for the power vehicle (tractor) and the towed vehicle (trailer).
  • Page 58 DECU: J1 Connector Pin Assignments (Towing and Non-Towing Dash Electronic Control Unit - DECU - Variants) Name Description GND_1 Ground PS_GND PVM pressure sensor supply ground PU_PS_SPL PVM power vehicle pressure sensor supply (5V) PU_PS_SIG_1 PVM power vehicle pressure sensor signal 1 OCC_SEN_GND Driver occupancy sensor 1 ground OCC_SEN_1...

  • Page 59: Communications Interface

    Dash Electronic Control Unit (DECU): J2 Connector Pin Assignments (Non-Towing DECU Variant) Parameter Value Unit GND_2 Ground No contact No contact No contact No contact CAN2_LO CAN2 low No contact CAN2_HI CAN2 high No contact No contact No contact No contact No contact VBATT_2 Battery input 2...
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