VOLVO
ECM-903F - Throttle position (TP). Signal missing. Intermittent fault
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:
5 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), V70 (1997–2000), V70 XC (1998–2000)
Vis modeller per årsmodell og motor (10)
- Volvo C70 Cabriolet (1998–2005)1999, 2001–2002
- Volvo C70 Cabriolet (1998–2005)2000Alle motorer unntatt: B5244S
- Volvo C70 Coupé (1998–2002)1999Alle motorer unntatt: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Alle motorer unntatt: B5244S
- Volvo C70 Coupé (1998–2002)2001–2002
- Volvo S70 (1997–2000)1999Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5254T
- Volvo S70 (1997–2000)2000Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5244T
- Volvo V70 (1997–2000)1999Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5234T8, B5254T
- Volvo V70 (1997–2000)2000Alle motorer unntatt: B5244S, B5244S2, B5244SG, B5244SG2, D5252T MSA 15.8
- Volvo V70 XC (1998–2000)1999–2000
Hva betyr feilkoden?
The engine control module (ECM) compares the desired throttle angle with the actual angle, which the throttle module (ETM) reports over CAN. The fault is intermittent: it has occurred on an earlier occasion but is not present right now. The code is set when the actual angle is missing while the desired angle is steady.
Mulige årsaker
- The throttle module receives too low a supply, for example from loose connections or low system voltage
- Damaged CAN wires
- Interference on the CAN signal wires
- A damaged throttle module
Hva du kan gjøre
- 1If you have diagnostic equipment, read the code status; if it shows the fault is not present now, it has been intermittent
- 2Look for damaged CAN wires and connectors, and use a multimeter to check that the wires have no short to ground or voltage and no break that comes and goes
- 3Check the battery and its connections for contact resistance and oxidation, so that the throttle module receives a steady supply
- 4With the ignition on, gently move the harness and connectors to see whether the fault returns
- 5Clear the code and road test the car to see whether it comes back
- 6If the fault returns, have a workshop check the throttle module and the control modules in the CAN network
Symptomer du kan merke4
- The accelerator pedal is ignored when braking
- Cruise control cannot be engaged
- Uneven idle
- Jerking during engine braking
Hva feilen kan påvirke3
- The throttle closes when braking
- Engine speed is controlled by fuel cut-off, so idle may feel uneven
- Cruise control is off during the driving cycle in which the fault was detected
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