1. Manuals
  2. Brands
  3. Volvo Trucks Manuals
  4. Other
  5. MID 146
  6. Service manual

Volvo Trucks MID 146 Service Manual

Fault codes, climate control cu-bas, cu-mcc, cu-ecc, vn, vhd version2
Hide thumbs
Table of Contents

Advertisement

Quick Links

Service Manual
Trucks
87
Group
Fault Codes, Climate Control
MID 146
CU-BAS, CU-MCC, CU-ECC
VN, VHD VERSION2
PV776-TSP196483

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MID 146 and is the answer not in the manual?

Questions and answers

Summary of Contents for Volvo Trucks MID 146

  • Page 1 Service Manual Trucks Group Fault Codes, Climate Control MID 146 CU-BAS, CU-MCC, CU-ECC VN, VHD VERSION2 PV776-TSP196483...
  • Page 3 Greensboro, NC USA Order number: PV776-TSP196483 Repl: This Service Manual replaces Service Manual 87, “Fault Codes, Climate Control MID 146” (11.2002), publication number PV776–TSP177273 and Service Bulletin 870–14, “Fault Codes, Climate Control MID 146, New Tool, 84105675” (08.2003), publication number PV776–TSP194734 ©...

  • Page 4: Table Of Contents

    MID 146 SID 2 Temperature Sensor, Evaporator ........ 11 MID 146 SID 2 Temperature Sensor Evaporator, Check ..... 12 MID 146 SID 5 Stepper Motor, Fresh Air and Recirculation ....14 MID 146 SID 5 Stepper Motor Fresh Air-recirculation, Check ..... 15 MID 146 SID 6 Stepper Motor, Air Distribution ........

  • Page 6: Specifications

    Group 87 Climate Control, Fault Codes Specifications Specifications Climate Unit, Signal Description Connection between the control unit and cable harness Conditions: • Breakout box 9998699 connected to adapter 9998596 between the control unit and cable harness. • Breakout box 9998699 connected to adapter 9990025 between the control unit and cable harness.
  • Page 7 Group 87 Climate Control, Fault Codes Specifications Termi- Measurement Nominal value Signal type Other points V ≈ B+ BSA9 Power supply, ignition key in BSA9 - BSA15 driving position BSA10 V ≈ B+ BSA11 Supply voltage BSA11 - BSA15 V ≈ B+ BSA12 Magnetic clutch, air BSA12 - BSA15...
  • Page 8 Group 87 Climate Control, Fault Codes Specifications Connected to the cable harness Conditions: • Breakout box 9998699 with adapter 9990025 connected to cable harness. • Breakout box 9998699 with adapter 9998596 connected to cable harness. • Control unit disconnected. R = resistance in ohms ( ) T8008832 W8003419 1 BSA (15 pin)
  • Page 9 Group 87 Climate Control, Fault Codes Specifications Termi- Measurement Nominal value Signal type Other points BSA13 BSA14 R ≈ 0 BSA15 Ground connection BSA15 - Ground BSB1 BSB2 BSB3 BSB4 BSB5 R ≈ 2 BSB6 Sensor, system pressure BSB6 - BSB3 2 bar R ≈...

  • Page 10: Tools

    Group 87 Climate Control, Fault Codes Tools Tools Special Equipment For special tools and other special equipment ordering instructions, see tool information in group 08. Special tools 9990025 9998534 9998596 AC Adapter 4 pin DIN adapter AC Adapter 9998699 Breakout box...
  • Page 11 Group 87 Climate Control, Fault Codes Tools Other special equipment 85105675 85104410 J-39200 Overlay used with 9998596 Overlay used with 9990025 Digital Multimeter...

  • Page 12: Troubleshooting

    MID 146 SID 22 Pressure sensor, refrigerant, high pressure 3. 4 “MID 146 SID 22 Pressure side Sensor, Refrigerant” page 37 MID 146 SID 232 5 volts supply to the sensor “MID 146 SID 232 5 Volt Supply Sensors” page 40...
  • Page 13 Troubleshooting Fault code Component / function Section MID 146 SID 250 SAE J1708 data link “MID 146 SID 250 J1708 Information Link” page 42 MID 146 PID 170 Cab, temperature sensor 3. 4 “MID 146 PID 170 Temperature Sensor, Cab” page 43...

  • Page 14: Mid 146 Sid 2 Temperature Sensor, Evaporator

    Yellow lamp lights up • The compressor "cycles" 20 s active, 60 s inactive Appropriate check: • See “MID 146 SID 2 Temperature Sensor Evaporator, Check” page 12 FMI 4 Abnormally low voltage or short-circuit to lower voltage T8008560 Conditions for fault code:...

  • Page 15: Mid 146 Sid 2 Temperature Sensor Evaporator, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-01 MID 146 SID 2 Temperature Sensor Evaporator, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a...
  • Page 16 Group 87 Climate Control, Fault Codes Troubleshooting Signal cable Conditions: • Measuring voltage using the J-39200 Digital Multimeter. • Engine with increased idle speed approx. 1000 rpm. • Measurement to the control unit. • Control unit connected. • Air conditioning (A/C) system active. Measurement points Nominal value V ≈...

  • Page 17: Mid 146 Sid 5 Stepper Motor, Fresh Air And Recirculation

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 SID 5 Stepper Motor, Fresh Air and Recirculation General information The stepper motor opens and closes the shutter for the fresh air and recirculation. The stepper motor is located on the front edge of the climate control unit.

  • Page 18: Mid 146 Sid 5 Stepper Motor Fresh Air-Recirculation, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-02 MID 146 SID 5 Stepper Motor Fresh Air-recirculation, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 19: Mid 146 Sid 6 Stepper Motor, Air Distribution

    Noticeable external symptoms: • Yellow lamp lights up • No control of Fresh air / Recirculation SID 6 Appropriate check: • See “MID 146 SID 6 Stepper Motor Air Distribution, T8008562 Component: A34 Climate Control Unit, E32 Climate Check” page 17 unit...

  • Page 20: Mid 146 Sid 6 Stepper Motor Air Distribution, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-03 MID 146 SID 6 Stepper Motor Air Distribution, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 21: Mid 146 Sid 9 Stepper Motor, Air Mix

    No control of air mixture / heat control • ECC- Impaired control of air mixture • T8008563 MCC/BAS- Impaired heat control Component: A34 Climate Control Unit, E32 Climate Appropriate check: unit • See “MID 146 SID 9 Stepper Motor, Air Mix/Heat Control, Check ” page 19...

  • Page 22: Mid 146 Sid 9 Stepper Motor, Air Mix/Heat Control, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-04 MID 146 SID 9 Stepper Motor, Air Mix/Heat Control, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 23: Mid 146 Sid 11 Solenoid Clutch, Compressor

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 SID 11 Solenoid Clutch, Compressor General information The magnetic clutch mechanically engages and disengages the compressor. The magnetic clutch is part of the compressor. Fault code FMI 4 Abnormally low voltage or short-circuit to lower voltage Conditions for fault code: •...

  • Page 24: Mid 146 Sid 12 Water Control Valve

    Component: A34 Climate Control Unit, E32 Climate unit, F33 Fuse ECC climate unit Noticeable external symptoms: • Yellow lamp lights up • No heat from the climate control unit Appropriate check: • See “MID 146 SID 12 Water Control Valve, Check” page 22...

  • Page 25: Mid 146 Sid 12 Water Control Valve, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-05 MID 146 SID 12 Water Control Valve, Check Special tools: 9990025, 9998699, 9998596 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a...
  • Page 26 Group 87 Climate Control, Fault Codes Troubleshooting Power supply cable Conditions: • Measuring voltage using the J-39200 Digital Multimeter. • Ignition key in the drive position. • Measurement to the control unit. • Control unit connected. Measurement points Nominal value V ≈...

  • Page 27: Mid 146 Sid 13 Temperature Sensor, Heat Exchanger

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 SID 13 Temperature Sensor, Heat Exchanger Possible cause: • Connector to sensor disconnected • Signal cable short-circuited to higher voltage • Ground lead short-circuited to higher voltage • An ECC control unit was mistakenly installed in place...

  • Page 28: Mid 146 Sid 13 Temperature Sensor Heat Exchanger, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-06 MID 146 SID 13 Temperature Sensor Heat Exchanger, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a...
  • Page 29 Group 87 Climate Control, Fault Codes Troubleshooting Signal cable Conditions: • Measuring voltage using the J-39200 Digital Multimeter. • Engine with increased idle speed approx. 1000 rpm. • Measurement to the control unit. • Control unit connected. • Air conditioning (A/C) system active. Measurement points Nominal value V ≈...

  • Page 30: Mid 146 Sid 14 Circulation Fan, Temperature Sensor, Cab

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 SID 14 Circulation Fan, Temperature Sensor, Cab General information The fan draws air into the cab temperature sensor so that the sensor retains the current cab temperature. The fan is built into the cab temperature sensor and is located in the center of the dashboard.

  • Page 31: Mid 146 Sid 15 Engine Fan Request

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 SID 15 Engine Fan Request General information The climate control unit sends a ground request to the Vehicle electronic control unit (VECU) for engine fan to control the A/C system pressure. The (VECU) sends the request to the Electronic engine control unit (EECU) via datalink to turn on the fan to cool the condensor.

  • Page 32: Mid 146 Sid 16 Stepper Motor, Phase 1

    None of the stepper motors for Fresh air / Recirculation, Air distribution or Air mixture (SID 5, 6, 9) can be controlled Appropriate check: • See “MID 146 SID 16 Stepper Motor Phase 1, Check” page 30 T8008569 Component: A34 Climate Control Unit, E32 Climate Unit...

  • Page 33: Mid 146 Sid 16 Stepper Motor Phase 1, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-07 MID 146 SID 16 Stepper Motor Phase 1, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 34: Mid 146 Sid 17 Stepper Motor, Phase 2

    None of the stepper motors for Fresh air / Recirculation, Air distribution or Air mixture (SID 5, 6, 9) can be controlled Appropriate check: • See “MID 146 SID 17 Stepper Motor Phase 2, Check” page 32 T8008570 Component: A34 Climate Control Unit, E32 Climate Unit...

  • Page 35: Mid 146 Sid 17 Stepper Motor Phase 2, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-08 MID 146 SID 17 Stepper Motor Phase 2, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 36: Mid 146 Sid 18 Stepper Motor, Phase 3

    None of the stepper motors for Fresh air / Recirculation, Air distribution or Air mixture (SID 5, 6, 9) can be controlled Appropriate check: • See “MID 146 SID 18 Stepper Motor Phase 3, Check” page 34 T8008571 Component: A34 Climate Control Unit, E32 Climate Unit...

  • Page 37: Mid 146 Sid 18 Stepper Motor Phase 3, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-09 MID 146 SID 18 Stepper Motor Phase 3, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 38: Mid 146 Sid 19 Stepper Motor, Phase 4

    None of the stepper motors for Fresh air / Recirculation, Air distribution or Air mixture (SID 5, 6, 9) can be controlled Appropriate check: • See “MID 146 SID 19 Stepper Motor Phase 4, Check” page 36 T8008572 Component: A34 Climate Control Unit, E32 Climate Unit...

  • Page 39: Mid 146 Sid 19 Stepper Motor Phase 4, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-10 MID 146 SID 19 Stepper Motor Phase 4, Check Special tools: 9990025, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a more detailed description of fault-tracing cables and connectors, see service information group 371.

  • Page 40: Mid 146 Sid 22 Pressure Sensor, Refrigerant

    Yellow lamp lights up • No cooling effect Appropriate check: • See “MID 146 SID 22 Pressure Sensor Refrigerant High Pressure Side, Check ” page 38 FMI 4 Abnormally low voltage or short-circuit to lower voltage Conditions for fault code: T8009496 •...

  • Page 41: Mid 146 Sid 22 Pressure Sensor Refrigerant High Pressure Side, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-11 MID 146 SID 22 Pressure Sensor Refrigerant High Pressure Side, Check Special tools: 9998534 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a...
  • Page 42 Group 87 Climate Control, Fault Codes Troubleshooting Checking component Conditions: • The component connector disconnected. • Measuring resistance using a J-39200 Digital Multimeter. • Measurement to the component. Measurement Nominal value points R ≈ 2 2 - 4 (2 bar, 29 psi) R ≈...

  • Page 43: Mid 146 Sid 232 5 Volt Supply Sensors

    Noticeable external symptoms: • Yellow lamp lights up • No air conditioning (A/C) function • Only temperature control in the extreme positions; maximum heat or maximum cooling Appropriate check: • See “MID 146 SID 232 5 Volt Supply Sensors, Check” page 41...

  • Page 44: Mid 146 Sid 232 5 Volt Supply Sensors, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-12 MID 146 SID 232 5 Volt Supply Sensors, Check Special tools: 9998534 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a...

  • Page 45: Mid 146 Sid 250 J1708 Information Link

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 SID 250 J1708 Information Link General information Diagnostic signals along with general information are sent on the SAE J1587/1708 data link. In case of failure this information link serves as a back up to the SAE J1939 control data link.

  • Page 46: Mid 146 Pid 170 Temperature Sensor, Cab

    Yellow lamp lights up • Considerably reduced temperature control Appropriate check: • See “MID 146 PID 170 Temperature Sensor Cab, Check” page 44 • Check control unit part numbers for correct installation. Wrongly installed parts may appear to function correctly, but will give very poor cooling/heating performance.

  • Page 47: Mid 146 Pid 170 Temperature Sensor Cab, Check

    Group 87 Climate Control, Fault Codes Troubleshooting 8730-21-02-13 MID 146 PID 170 Temperature Sensor Cab, Check Special tools: 9990025, 9998596, 9998699 Other special equipment: J-39200 NOTE • Check all relevant connectors. Check for loose connections, contact resistance and oxidation. For a...
  • Page 48 Group 87 Climate Control, Fault Codes Troubleshooting Checking component Conditions: • The component connector disconnected. • Measuring resistance using a J-39200 Digital Multimeter. • Measurement to the component. Measurement Nominal value points R ≈ 52.75 - 57.46 k 3 - 4 (-10 C, 14 F) R ≈...

  • Page 49: Mid 146 Pid 171 Temperature Sensor, Ambient Temperature

    Group 87 Climate Control, Fault Codes Troubleshooting MID 146 PID 171 Temperature Sensor, Ambient Temperature Error code FMI 3 Abnormally high voltage or short-circuit to higher voltage. Conditions for error code: • If the control unit detects a voltage higher than 4.9V the control unit interprets this as an error and a fault code is stored.
  • Page 50 8730-21-02-09 MID 146 SID 18 Stepper Motor Phase 3, Check ..................34 8730-21-02-10 MID 146 SID 19 Stepper Motor Phase 4, Check ..................36 8730-21-02-11 MID 146 SID 22 Pressure Sensor Refrigerant High Pressure Side, Check ..........38 8730-21-02-12 MID 146 SID 232 5 Volt Supply Sensors, Check ..................41...
  • Page 52 Volvo Trucks North America, Inc. P.O. Box 26115, Greensboro, NC 27402-6115 Volvo Trucks Canada, Ltd. 5600A Cancross Court, Mississauga, Ontario L5R 3E9 http://www.volvotrucks.volvo.com PV776-TSP196483 (1000) 10.2003 © Volvo Trucks North America, Inc., 2003...

Table of Contents

Save PDF