VOLVO
ECM-902B - Communication with throttle unit. Signal too high
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Ten kod błędu ma różne znaczenie w zależności od modelu, rocznika lub silnika. Wybierz znaczenie, które dotyczy Twojego samochodu.
Dotyczy następujących modeli:
7 modeliC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Pokaż modele wg rocznika i silnika (20)
- Volvo C70 Cabriolet (1998–2005)2000Tylko silnik: B5244S
- Volvo C70 Coupé (1998–2002)1999Tylko silnik: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Tylko silnik: B5244S
- Volvo S60 (2001–2009)2001Tylko silnik: B5244S, B5244S2
- Volvo S60 (2001–2009)2002Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2003–2005Tylko silnik: B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006–2008Tylko silnik: B5244SG
- Volvo S70 (1997–2000)1999Tylko silnik: B5254S DENSO
- Volvo S70 (1997–2000)2000Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2000Tylko silnik: B5244S, B5244S2
- Volvo S80 (1999–2006)2001Tylko silnik: B5244S, B5244S2, B5244SG
- Volvo S80 (1999–2006)2002Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2003–2005Tylko silnik: B5244SG, B5244SG2
- Volvo S80 (1999–2006)2006Tylko silnik: B5244SG
- Volvo V70 (1997–2000)1999Tylko silnik: B5254S DENSO
- Volvo V70 (1997–2000)2000Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2001Tylko silnik: B5244S, B5244S2, B5244SG
- Volvo V70 (2000–2008)2002Tylko silnik: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Tylko silnik: B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006–2008Tylko silnik: B5244SG
Co oznacza ten kod błędu?
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.
Możliwe przyczyny
- 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
Co możesz zrobić
- 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
Objawy, które możesz zauważyć5
- 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
Na co może wpływać usterka3
- 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
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.