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freightliner Park Smart Technical Information

freightliner Park Smart Technical Information

A fully integrated electrical temperature management unit
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Technical Information and Diagnostic Guide
FOR
Freightliner Park Smart No Idle System
This guide will assist you in becoming more familiar with the working components of
the Park Smart® System and the proper steps and procedures to completely diagnose
the no idle unit.
1

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  • Page 1 Technical Information and Diagnostic Guide Freightliner Park Smart No Idle System This guide will assist you in becoming more familiar with the working components of the Park Smart® System and the proper steps and procedures to completely diagnose the no idle unit.

  • Page 2: Table Of Contents

    Table of Contents Page 1) External Component Identification and Location A: Battery Separator ............4 B: F1 Fuse 60 amp (Maxi)..........4 C: F2 Fuse 15 amp (Mini) ..........4 D: F3 Fuse 20 amp (Mini) ..........4 E: F4 Fuse 50 Amp (Maxi)..........4 F: F5 Fuse 15 Amp (Mini) ..........4 G: Relays LS1 –...
  • Page 3 Appendix A: Batteries ................. 12 B: Separator ................12 C: AUX Control Panel Testing............ 13 D: Relay Testing ..............13/14 E: Pressure Switch Testing ............14 F: Fuses ..................14 G: Evaporator Sensor/Freeze Switch Testing ......14 H: Compressor Thermal Limit Switch ........15 I: Control PCB Assembly ............15/16 J: Condenser Fan Testing ............

  • Page 4: A: Battery Separator

    A: Battery Separator The battery separator is used for separating the trucks main starting batteries from the AUX batteries. It also allows the charging of the AUX batteries after the main truck batteries are charged above 13.2 Volts. Mounting is outside the truck on the frame rail.

  • Page 5: G: Relays Ls1 - Ls4

    (PARKED MODE OR ENGINE OFF-KEY ON MODE) H: Blend Door Actuator This actuator operates the blend door, changing the air flow path through the Park Smart evaporator coil and heater core.

  • Page 6: I: Aux Control Panel

    A: Control PCB Assembly This device stores the operating program and controls the Park Smart Unit, as well as controls the output voltage to the variable speed compressor. It is located in the lower section under the evaporator blower and fuse center.

  • Page 7: B: Compressor

    B: Compressor This unit is part of the hermetically sealed refrigeration system. Units built with RING TERMINAL compressor. Follow instructions on pages 38-41 for Harness and Controller Service. New 10-2015 C: Thermal Limit Switch on Compressor This is a normally closed switch to protect compressor from high temperature.

  • Page 8: E: Condenser Fan

    E: Condenser Fan This fan draws air from outside underneath the truck and pushes it through the condenser coil to cool the refrigerant flowing through the system. The hot air is exhausted under the truck. F: High Pressure Switch This normally closed, brazed pressure switch will open and prevent the operation of the compressor if high internal pressure develops in the system.

  • Page 9: Diagnostics Table

    Park Smart System Diagnostic Table TRUCK MUST BE IN PARKED MODE TO PERFORM DIAGNOSTIC TESTS! For additional wiring diagrams and J1939 fault codes see Freightliner doc # C02.03 PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION SEE APPENDIX Unit Will Not Run or Turn 1.
  • Page 10 PCB assy, pin C15 NOTE: Heater diagnostics can be performed using Espar’s EDITH diagnostics lap top based program. You must have the ISO cable adapter for the ParkSmart Hydronic heater. It is proprietary to Freightliner and other cable adapters will not interchange!

  • Page 11: Appendix

    Battery Voltage is critical for system operation. Special attention should be given to both sets of batteries. Attention: Poor quality truck batteries or a weak alternator will have a Negative impact on Park Smart unit run time. Always maintain the best possible batteries and charging system. Standard alternator 270 Amp Load test and maintain batteries as required by the manufacturer.

  • Page 12: C: Aux Control Panel Testing

    24 (wake up signal). Pushing the parked button switches the 12 volts at pin 24 to ground, signaling the Park Smart unit to operate. During this test, you should not have 12 volts to pin 6 (ignition signal) and you must have Can Bus connection for the unit to operate.

  • Page 13: E: Pressure Switch Testing

    If you do not, you may have a broken wire, bad connection, hi pressure situation or defective switch. If the pressure, harness and connections are ok, the unit will have to be replaced. Call Freightliner Dealer F.

  • Page 14: H: Compressor Thermal Limit Switch

    Do not attempt to test the controller or compressor until you have completely eliminated all other possibilities. In parked mode, when you turn the Park Smart unit on, the compressor relay LS 3 and blower/fan relay LS 4 will close. LS 3 will send 12 VOLT main power from terminal 87, through the F 1 fuse, to the compressor controller section of the control PCB assembly.

  • Page 15: J: Condenser Fan Testing

    J. Condenser Fan Motor Testing: First do a visual inspection of all blower parts. For condenser fan location see Freightliner ParkSmart documents. Reconnect any wires or plugs you might have disconnected when removing the cover. Turn the Parked Unit on, if you do not have 12 volt at the fan, check fuse F5 And relay LS4.

  • Page 16: K: Evaporator Blower Testing

    If so call your Freightliner dealer. M. Blend Door Actuator: For blend door location see Freightliner ParkSmart documents Physical inspection can be seen through the top of the unit by removing the fuse panel and evaporator blower.

  • Page 17: N: Sleeper Temperature Sensor

    This sensor monitors the sleeper internal temperature. See chart page 18 for testing data. If this sensor fails, the unit will default to 72 degrees. O. Outside Air Temperature Sensor: Location see Freightliner ParkSmart documents This sensor monitors the ambient air temperature. See chart page 18 for testing data.

  • Page 18: P: Evaporator Sensor Chart

    Evaporator Sensor Resistance Chart Evaporator Sensor Resistance Voltage Temp(ºF) Temp (ºC) (nominal) (nominal) -40.0 -40.0 92757.0 4.554 -31.0 -35.0 66870.0 4.402 -22.0 -30.0 48790.0 4.215 -13.0 -25.0 35937.0 3.991 -4.0 -20.0 26757.0 3.732 -15.0 20103.0 3.443 14.0 -10.0 15252.0 3.133 23.0 -5.0 11664.0...

  • Page 19: Q: Sleeper / Ambient Air Sensor Chart

    Sleeper & Ambient Air Sensor Resistance Chart 1 Sleeper, Condenser Air Inlet Temperature Sensor Resistance Voltage Temp(ºF) Temp (ºC) (nominal) (nominal) -40.0 -40.0 336500.0 4.86 -31.0 -35.0 242589.0 4.80 -22.0 -30.0 177000.0 4.73 -13.0 -25.0 130370.0 4.64 -4.0 -20.0 97070.0 4.53 -15.0 72929.0...

  • Page 25: T: Fault Codes

    ParkSmart Fault Code List 4/21/2010 Source Name Description Address Outside Air Temperature Sensor Shorted to ground Outside Air Shorted to battery or open Temperature Sensor circuit Shorted to battery or open High Pressure Switch circuit Evaporator Sensor Shorted to ground 1547 Shorted to battery or open Evaporator Sensor...

  • Page 26: U: Phase Harness / All System Controllers

    All system controllers! Attention: Removing the phase harness for testing Operating the system for troubleshooting purposes with the phase harness disconnected can result in a locked out system. With no active fault codes, the controller should always attempt to start the compressor up to 10 times in a period of approx.

  • Page 27: V: Servicing A Cluster Block Phase Harness

    Service Instructions for Phase Harness / Cluster Block Compressor Only Service bulletin Parksmart Rev 5 NON OPT IDLE - Compressor / controller diagnostics System Issue: No Cooling / Compressor not running: Moving forward, please use these diagnostics steps when troubleshooting the above conditions. DO NOT REMOVE THE CLUSTER BLOCK CONNECTOR FROM THE COMPRESSOR TERMINALS! Follow the below instructions for proper diagnostic steps.
  • Page 28 Service Instructions for Phase Harness Parksmart sealed WARNING: To avoid potential property damage, personal injury read Important Safety Warnings and ALL instructions before attempting to install or service product. CAUTION: Care must always be taken to install the control cover without bending the connector pins identified in FIGURE 1.
  • Page 29 Service Instructions for Phase Harness Parksmart sealed WARNING: To avoid potential property damage, personal injury read Important Safety Warnings ALL instructions before attempting to install or service product. CAUTION: Care must always be taken to install the control cover without bending the connector pins identified in FIGURE 1.

  • Page 30: W: Servicing A Ring Terminal Phase Harness

    Service Instructions for Phase Harness / Ring Terminal Compressor Only WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product.
  • Page 31 Service Instructions for Phase Harness / Ring Terminal Compressor Only WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product.
  • Page 32 Service Instructions for Phase Harness / Ring Terminal Compressor Only WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product. CAUTION: Care must always be taken to install the control cover without bending the connector pins identified in FIGURE 1.
  • Page 33 Service Instructions for Phase Harness / Ring Terminal Compressor Only WARNING: To avoid potential property damage or personal injury, Read Important Safety Warnings and ALL instructions before attempting to install or service product. CAUTION: Care must always be taken to install the control cover without bending the connector pins identified in FIGURE 1.

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