VOLVO
ECM-902B - Communication with throttle unit. Signal too high
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
7 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Vis modeller per årsmodell og motor (20)
- Volvo C70 Cabriolet (1998–2005)2000Kun motor: B5244S
- Volvo C70 Coupé (1998–2002)1999Kun motor: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Kun motor: B5244S
- Volvo S60 (2001–2009)2001Kun motor: B5244S, B5244S2
- Volvo S60 (2001–2009)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006–2008Kun motor: B5244SG
- Volvo S70 (1997–2000)1999Kun motor: B5254S DENSO
- Volvo S70 (1997–2000)2000Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2000Kun motor: B5244S, B5244S2
- Volvo S80 (1999–2006)2001Kun motor: B5244S, B5244S2, B5244SG
- Volvo S80 (1999–2006)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo S80 (1999–2006)2006Kun motor: B5244SG
- Volvo V70 (1997–2000)1999Kun motor: B5254S DENSO
- Volvo V70 (1997–2000)2000Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2001Kun motor: B5244S, B5244S2, B5244SG
- Volvo V70 (2000–2008)2002Kun motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Kun motor: B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006–2008Kun motor: B5244SG
Hva betyr feilkoden?
The ECM has not received any CAN signal from the throttle module after start, even though the engine runs at a sufficiently high speed. This variant therefore concerns communication after start. The code can be set together with other codes, which should then be read out at the same time.
Mulige årsaker
- Delayed engagement of the system relay when the ignition is switched on
- The voltage supply to the throttle module is too high when the ignition is switched on
- Interference on the CAN wiring
- Defective CAN wiring
- A damaged control module in the CAN network
Hva du kan gjøre
- 1Check that the system relay engages in time at start and that the throttle module gets the correct voltage, since a delayed engagement can cause this code
- 2Check the CAN wiring for damage and measure that it has no break or short to ground or voltage
- 3Check the CAN connectors for contact resistance and oxidation
- 4Read the CAN codes in the other control modules first and trace them; the reconfiguration does not show the root cause
- 5If you have diagnostic equipment, read the throttle signals in live data during start-up and a road test and see whether they drop out
- 6If the fault remains, have a workshop check the control modules in the CAN network
Symptomer du kan merke5
- The accelerator pedal is ignored when braking
- Cruise control cannot be engaged
- Uneven idle
- Jerking during engine braking
- The electronic throttle system warning lamp is on for the C70 and for the S/V70 up to the year 2000
Hva feilen kan påvirke3
- The throttle and accelerator pedal behave as if they were mechanically linked
- Fuel cut-off always follows the pedal position during the reconfiguration
- Cruise control is switched off during the driving cycle in which the fault was detected, and it returns at the next start if the fault has gone
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