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Fault Tracing - Miscellaneous Diagnostics: Other Volvo XC90 I

Entertainment Systems ~2951 words

BUTTONS ON THE LEFT-HAND KEYPAD

Activate the buttons on the left-hand keypad.

  1. CD button
  2. Back button
  3. AM/FM button
  4. Forward button
  5. 1 button
  6. 4 button
  7. 7 button
  8. * button
  9. 2 button
  10. 5 button
  11. 8 button
  12. 0 button
  13. 3 button
  14. 6 button
  15. 9 button
  16. # button
  17. * button

BUTTONS ON THE RIGHT-HAND KEYPAD

Activate the buttons on the right-hand keypad.

  1. buttons for sound control
  2. button for carphone on/off
  3. button for selecting the function
  4. buttons for the carphone and menu control
  5. button to open the CD tray
  6. CD eject button
  7. Up button
  8. Down button
  9. knob to select the source
  10. SIM card holder (only for cars with carphones)

STANDARD DISPLAY SYMBOLS

Activate the symbols in the standard display.

  1. TP symbol
  2. Symbol)))
  3. DDPLII symbol
  4. PHONE symbol
  5. REG symbol
  6. 3CH symbol
  7. PHONE ONLINE symbol
  8. MESSAGE symbol
  9. VOICE MESSAGE symbol.

CONTENTS

Select type of description.

  1. see «DESCRIPTION OF FROZEN VALUES»(ref-476764-S02789963932012060500000)
  2. see «COUNTERS, DESCRIPTION»(ref-494840-S13893453352012081600000)
  3. see «STATUS IDENTIFIER, DESCRIPTION»(ref-494781-S03442634392012081600000)

EXPLANATION

Not all the parameters described need to be implemented in the control module. This varies from system to system.

Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.

HINT: Frozen values are stored the first time a diagnostic trouble code (DTC) is generated. Because of this, intermittent open-circuits on the MOST network may be hard to diagnose.

BATTERY VOLTAGE, VALUE

Measurement range: 0-30 V.

Normal value when the generator (GEN) is charging: 13.0-14.5 V.

The value indicates the voltage at the central electronic module (CEM).

DISTANCE, VALUE

Measurement range: 0-1048575 km.

The value indicates the total mileage of the car at the time the diagnostic trouble code (DTC) was stored.

PASSENGER COMPARTMENT TEMPERATURE, VALUE

Measurement range: -60-195 °C.

The combined instrument panel obtains the value via the control area network (CAN).

OUTSIDE TEMPERATURE, VALUE

Measurement range: -128-127.75 °C.

The combined instrument panel obtains the value via the control area network (CAN).

ENGINE RUNNING, STATUS

The status displays whether the engine was running when the diagnostic trouble code (DTC) was stored.

No = the engine was not running

Yes = the engine was running

TIME, VALUE

The value displays the time that has passed since the diagnostic trouble code (DTC) was stored.

CAN COMMUNICATION, STATUS

The status indicates the control modules in the Control area network (CAN) which were communicating when the diagnostic trouble code (DTC) was stored.

30 SUPPLY, VALUE

Measurement range: 0-50 V

The value indicates the power supply to the infotainment control module (ICM) when the diagnostic trouble code (DTC) was stored.

5 V SUPPLY, VALUE

Measurement range: 0-10 V

Normal range: 4.5-5.5 V

The value indicates the internal power supply in the infotainment control module (ICM) when the diagnostic trouble code (DTC) was stored.

3.3 V SUPPLY, VALUE

Measurement range: 0-5 V

Normal range: 2.9-3.5 V

The value indicates the internal power supply in the infotainment control module (ICM) when the diagnostic trouble code (DTC) was stored.

DISPLAY VOLTAGE, VALUE

Measurement range: 0-600 V

Normal range: 40-80 V

The value indicates the power supply to the display in the infotainment control module (ICM) when the diagnostic trouble code (DTC) was stored.

MOST LOCKED, STATUS

The status indicates whether the MOST network was closed when the diagnostic trouble code (DTC) was stored.

No = The MOST network was not closed and communication was not possible.

Yes = The MOST network was closed and communication was possible.

BUTTONS LEFT KEYPAD, STATUS

The status indicates which button on the left-hand keypad was activated when the diagnostic trouble code (DTC) was stored.

Activated = The button was activated

Not activated = The button was not activated.

BUTTONS RIGHT KEYPAD, STATUS

The status indicates which button on the right-hand keypad was activated when the diagnostic trouble code (DTC) was stored.

Activated = The button was activated

Not activated = The button was not activated.

INPUT SIGNAL FROM THE BUTTON CIRCUIT, VALUE

Measurement range: 0-1023 V

The value indicates the voltage in the button circuit when the diagnostic trouble code (DTC) was stored.

  1. Left button circuit 1 (AM/FM, CD, |<<, >>|)
  2. Left button circuit 2 (*, 7, 4, 1)
  3. Left button circuit 3 (0, 8; 5, 2)
  4. Left button circuit 4 (#, 9, 6, 3)
  5. Right button circuit 1 (>>, AM/FM, |<<, CD)
  6. Right button circuit 2 (Up, Down, CD eject)
  7. Right button circuit 5 (sound)
  8. Button circuit for power button

VOLUME AND SELECTOR SWITCHES, STATUS

The status indicates the position of the switches in the Volume and Selector controls

Open

Closed

VOLUME AND SELECTOR KNOB MOVEMENT, VALUE

Measurement range: 0-FF (step)

The value indicates whether the Volume or Selector controls have been activated and how many steps they had been moved when the diagnostic trouble code (DTC) was stored.

Not all the parameters described need to be implemented in the control module. This varies from system to system.

Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.

Measurement range: 0-12 V.

Normal value when the generator (GEN) is charging: 13.0-14.5 V.

Measurement range: 0-1048575 km.

The value indicates the total mileage of the car at the time the diagnostic trouble code (DTC) was stored.

Measurement range: -60-195 °C.

The combined instrument panel obtains the value via the control area network (CAN).

Measurement range: -128-127.75 °C.

The combined instrument panel obtains the value via the control area network (CAN).

The status displays whether the engine was running when the diagnostic trouble code (DTC) was stored.

No = the engine was not running

Yes = the engine was running

The value displays the time that has passed since the diagnostic trouble code (DTC) was stored.

Not all the parameters described need to be implemented in the control module. This varies from system to system.

Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.

Measurement range: 0-28.4 V.

Normal value when the generator (GEN) is charging: 13.0-14.5 V.

The value indicates the voltage at the steering wheel module.

Measurement range: 0-1048575 km.

The value indicates the total mileage of the car at the time the diagnostic trouble code (DTC) was stored.

Measurement range: -60-195 °C.

The phone module (PHM) obtains the value via the control area network (CAN).

Measurement range: -128-127.75 °C.

The phone module (PHM) obtains the value via the control area network (CAN).

The status displays whether the engine was running when the diagnostic trouble code (DTC) was stored.

No = the engine was not running

Yes = the engine was running

The value displays the time that has passed since the diagnostic trouble code (DTC) was stored.

FUNCTIONS, STATUS

The status indicates which type of function was available when the diagnostic trouble code (DTC) was stored.

Carphone = normal carphone services available.

SOS = calls can only be made to the emergency services.

Infocom = data communication.

Unit switched off = the phone module (PHM) is switched off.

CALL STATUS

The status indicates the type of call when the diagnostic trouble code (DTC) was stored.

No activity = the phone module (PHM) is in standby mode. No ongoing calls or calls be made to/from the car.

Call from car = a number has been dialed from the car, but no answer.

Call to car = an incoming call to the car, but no answer.

Call = an ongoing call.

Call + outgoing = a call is on hold while a number is being dialed from the car. No answer.

Call + incoming = a call is on hold and there is an incoming call to the car.

Call on hold = approximately call is on hold.

Call + hold = a call is on hold and another call is ongoing.

Conference = a call with multiple participants connected

KEY POSITION, STATUS

The status indicates the position of the ignition key when the diagnostic trouble code (DTC) was stored.

No key = no key in the ignition switch.

Position 0 = ignition key in position 0.

Position 1 = ignition key in position 1.

Position 2 = ignition key in position 2.

Position 3 = ignition key in position 3.

CONTROL MODULE COMMUNICATION, CAN/MOST, STATUS

The status indicates which control modules on the MOST and LS-CAN networks the central electronic module (CEM) was able to communicate with when the diagnostic trouble code (DTC) was stored.

CEM OK = communication with the central electronic module (CEM), LS-CAN.

CEM nok = no communication with the central electronic module (CEM), LS-CAN.

AUD OK = communication with the audio module (AUD), MOST.

AUD nok = no communication with the audio module (AUD), MOST.

DIM OK = communication with the Driver Information Module (DIM), LS-CAN.

DIM nok = no communication with the Driver Information Module (DIM), LS-CAN.

DDM OK = communication with the Driver Door Module (DDM), LS-CAN.

DDM nok = no communication with the Driver Door Module (DDM), LS-CAN.

MMM OK = communication with the multimedia module (MMM), MOST.

MMM nok = no communication with the multimedia module (MMM), MOST.

PDM OK = communication with the Passenger Door Module (PDM), LS-CAN.

PDM nok = no communication with the Passenger Door Module (PDM), LS-CAN.

PSM OK = communication with the Power Seat Module (PSM), LS-CAN.

PSM nok = no communication with the Power Seat Module (PSM), LS-CAN.

SRS OK = communication with the Supplemental Restraint System Module (SRS), LS-CAN.

SRS nok = no communication with the Supplemental Restraint System Module (SRS), LS-CAN.

REM OK = communication with the rear electronic module (REM), LS-CAN.

REM nok = no communication with the rear electronic module (REM), LS-CAN.

SWM OK = communication with the steering wheel module (SWM), LS-CAN.

SWM nok = no communication with the steering wheel module (SWM), LS-CAN.

CCM OK = communication with the Climate Control Module (CCM), LS-CAN.

CCM nok = no communication with the Climate Control Module (CCM), LS-CAN.

UEM OK = communication with the upper electronic module (UEM), LS-CAN.

UEM nok = no communication with the upper electronic module (UEM), LS-CAN.

CD PLAYER STATUS

The CD player can have the following status

  1. Play
  2. Stop
  3. Pause
  4. Load
  5. Unload
  6. Search forwards
  7. Search backwards
  8. Fast forward
  9. Fast backward
  10. Retract
  11. Empty

TRACK

The value indicates which disc track is playing at the moment.

PLAYED TIME

The value indicates the time the current track has been playing.

ACTIVE DISC, ONLY FOR CARS WITH A CD CHANGER

Measurement range: 1-6.

The value indicates which of the discs in the CD changer is active.

MD PLAYER STATUS

The MD player can have the following status

  1. Play
  2. Stop
  3. Pause
  4. Load
  5. Unload
  6. Search forwards
  7. Search backwards
  8. Fast forward
  9. Fast backward
  10. Retract
  11. Empty

The value indicates which disc track is playing at the moment.

The value indicates the time the current track has been playing.

POWER SUPPLY, VALUE

Measurement range 0-65.535 V.

Normal value is approximately 12 V. The phone module (PHM) is supplied with +30.

The value indicates the power supply to the phone module (PHM).

PHONE MODULE (PHM) TEMPERATURE, VALUE

Measurement range -127- 127°C.

The normal temperature is approximately 70 °C but may vary depending on whether the air conditioning (A/C) or heater is in use.

The value indicates the internal temperature in the phone module (PHM).

SIGNAL STRENGTH GSM, VALUE

Measurement range 0-100%.

The value indicates the signal strength for GSM reception and may vary depending on the position of the operator and of the car.

FREQUENCY BAND AM/FM

Indicates the current wave band or whether the control module is switched off.

MAIN ANTENNA

The value indicates whether the main aerial is on or off.

SUB-ANTENNA

The value indicates whether the sub aerial is on or off.

REGION

Indicates which region the antenna module (ATM) is configured for, EU / US / AUS / JP.

EQUIPPED WITH TMC

Indicates whether the antenna module (ATM) is equipped with TMC.

EQUIPPED WITH GPS

Indicates whether the antenna module (ATM) is equipped with GPS.

FREQUENCY

Indicates the frequency which is set.

TMC FREQUENCY

Indicates the frequency the TMC receiver is set to.

SIGNAL STRENGTH TMC

Indicates the strength of the TMC signal.

GPS RECEIVED POSITION, LONGITUDE

Indicates the received longitudinal position.

GPS RECEIVED POSITION, LATITUDE

Indicates the received latitudinal position.

GPS SATELLITES ACCESSIBLE

Indicates how many satellites the system is in contact with.

  1. Not available - no contact with the satellite
  2. No fix - contact with a satellite but unable to fix a position
  3. 2D fix - contact with a satellite, two-dimensional position fixing
  4. 3D fix - contact with a satellite, three-dimensional position fixing.

Measurement range: 0 - 50 V

Normal range: 12 - 14 V

The value indicates the power supply to the infotainment control module (ICM).

Measurement range: 0 - 10 V

Normal range: 4.5 - 5.5 V

The value indicates the internal power supply in the infotainment control module (ICM).

Measurement range: 0 - 5 V

Normal range: 2.9 - 3.5 V

The value indicates the internal power supply in the infotainment control module (ICM).

Measurement range: 0 - 600 V

Normal range: 40 - 80 V

The value indicates the voltage to the display in the infotainment control module (ICM).

POWER CONSUMPTION INFOTAINMENT, VALUE

Measurement range: 0 - 50 A

The value gives the power consumption of the infotainment system.

POWER CONSUMPTION INFOTAINMENT CONTROL MODULE (ICM), VALUE

Measurement range: 0 - 50 A

The value gives the power consumption of the Infotainment Control Module (ICM).

Measurement range: 0 - 1023 V

Normal range: ~4.1 V (when no buttons in the relevant circuit are affected.)

The value indicates the voltage in the button circuit.

  1. Normal range: ~(3.6V, 3.1V, 2.4V, 1.4V)
  2. Left button circuit 1 (>>|, AM/FM, |<<, CD)
  3. Left button circuit 2 (*, 7, 4, 1)
  4. Left button circuit 3 (0, 8; 5, 2)
  5. Left button circuit 4 (#, 9, 6, 3)
  6. Right button circuit 1 (>>, AM/FM, |<<, CD)
  7. Normal range: ~(3.1V, 2.4V, 1.4V)
  8. Right button circuit 2 (Up, Down, CD eject)
  9. Normal range: ~(1.4V)
  10. Right button circuit 5 (sound)
  11. Button circuit for power button

NUMBER OF CONTROL MODULES IN THE MOST NETWORK, VALUE

The value indicates the number of control modules in the present MOST network. The number can be between 4-8.

BUTTONS IN THE KEYPAD, STATUS

The status displays if the selected button is activated or not

DISPLAY TYPE, STATUS

Status indicates what display type for the present unit.

  1. Standard
  2. Graphic
  3. Undefined.

The status indicates whether the MOST network is closed and communication possible.

No

Yes

NETWORK ACTIVITY, STATUS

Status indicates if there is communication in the MOST network.

No

Yes

3 DB SWITCH, STATUS

Status displays if the 3 dB switch is on or off.

MISFIRING

If the fuel / air mix does not completely ignite in the combustion chamber, the engine misfires. The engine control module (ECM) detects the misfire by registering deviations in the rotation of the flywheel.

Deviation in flywheel rotation is due to

  1. driveline oscillations incorrect fuel / air mixture poor ignition sparking insufficient compression.
  2. normal variations caused by uneven combustion incorrect fuel / air mixture poor ignition sparking insufficient compression.
  3. flywheel mechanical tolerances incorrect fuel / air mixture poor ignition sparking insufficient compression.
  4. misfiring, which is caused by: incorrect fuel / air mixture poor ignition sparking insufficient compression.

The mechanical tolerances and oscillations in the drive line disrupt the signal. This makes it difficult to determine if a misfire has occurred or if the detection is incorrect.

The signal from the flywheel is adapted to filter out the irregular rotation. This eliminates the mechanical variations in the flywheel.

Misfires can be detected by registering the time difference between the intervals and comparing this with the filtered time difference in the flywheel. If the flywheel signal has not been adapted, the diagnostic is active. However this cannot identify misfires as accurately as an adapted flywheel signal. The adaptation is carried out at different loads and engine speed ranges. For the values to be set in the different ranges, the deviation in speed must be within certain fixed limits.

The misfire diagnostic is shut off when certain component faults have been detected by the engine control module (ECM).

"Rough Road" detection (drivetrain oscillations, caused by extremely uneven road surfaces, for example) is not activated on this engine.

MISFIRE AFFECTING EMISSION LEVELS

If the Engine control module (ECM) detects a number of misfires below 1, 000 engine RPM this is interpreted as misfires affecting emissions. Trouble code is stored and MIL-light is activated. Immediately in connection with engine start, that is, during the engine's first 1, 000 revs after start, the misfire diagnosis is four times as sensitive as later in the driving cycle.

CATALYTIC CONVERTER DAMAGING MISFIRE

If the engine control module (ECM) detects a certain number of misfires during 200 engine revolutions, this is interpreted as misfiring which damages the three-way catalytic converter (TWC). The number of misfires that the engine control module (ECM) allows before interpreting it as misfiring depends on the load and engine speed range. the malfunction indicator lamp (MIL) flashes when the misfire occurs, and shines constantly once the diagnostic trouble code (DTC) is stored.

The engine control module (ECM) does not store specific diagnostic trouble codes (DTCs) for emission or catalytic converter damaging related misfires.

The engine control module (ECM) registers and stores the engine speed and load range and whether the engine is warm or cold when misfiring is detected.

If the misfire stops, the requirements for the engine speed, load parameters and engine temperature must be met without misfiring before the engine control module (ECM) will begin counting down to extinguish the malfunction indicator lamp (MIL) and erase the stored diagnostic trouble codes (DTCs) for misfiring

The number of misfires can be read off.

SUBSTITUTE VALUE

For certain types of diagnostic trouble codes (DTCs), the missing signal is replaced with a substitute value so that the system can continue functioning.

More articles — Fault Tracing - Miscellaneous Diagnostics