Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
To check that the engine control system reacts as intended, the Engine control module (ECM) monitors continuously that requested measured air mass does not become too low. To do this, the Engine control module (ECM) calculates a lowest permitted air mass, based on throttle angle and engine rpm. This value is then compared with the measured air mass from the mass air flow sensor. If Engine control module (ECM) registers that the measured air mass is below the calculated lowest air mass for longer time than 0.32 seconds, then diagnostic trouble code ECM-982A, Too low value torque, is stored.
For upgraded software, released during year 2006 or later, the above detection time has been increased from 0.3 to 0.6 seconds.

Substitute value

Closing of throttle during braking.
The accelerator pedal position is ignored when the brake pedal is depressed.

Cruise control off.
Cruise control off during entire operating cycle in which fault was detected. If the fault is no longer present, the function is available the next time the car is started.

Fuel cut-off that follows accelerator pedal position.
Engine speed is regulated via fuel cut-off by deactivating the injectors one at a time. The engine speed is decided by the accelerator pedal position sensor's position and the speed is maximized to approx. 2000 rpm. This reconfiguration can cause the engine to idle very unevenly since the engine control module (ECM) regulates engine speed by cutting of the fuel to the cylinders individually. Do not confuse this reconfiguration (engine behavior) with an actual driveability problem that was present before reconfiguration. For upgraded software, released in 2006 or later, adjustments have been made to substitute values.

Possible source
- something is blocking the throttle position sensor (an oil film, dust etc.)
- defective mass air flow (MAF) sensor
- defective engine control module (ECM)
- This diagnostic trouble code is generated in combination with other trouble codes. Information on the possible root cause is described.

Fault symptom[s]
- Poor response from accelerator
- Cruise control does not operate
- uneven idle