Table 2, Trouble Codes
| Trouble Code | Information Sensor |
|---|---|
| Cause of Fault | Remedy in |
F0: DATA LIST
| No. | Trouble Code Storage when | ||
|---|---|---|---|
| 73 | MASS AIR FLOW SENSOR VOLTAGE LOW | 07 | · Engine is not in the start phase |
· Engine speed higher than 520 rpm
· Mass air flow meter signal lower than 3.0 kg/h (short circuit to ground)
Note:
The fault can generally be expected to be caused by defects in the wiring.
Replacement value:
The control unit takes a replacement value dependent on the engine speed and throttle valve angle for the load signal.
If the throttle valve potentiometer is also defective, the following replacement values are used for calculation:
X 25 XE:
For engine speed lower than 1000 rpm with load signal 2.0 ms
For engine speed higher than 1000 rpm with load signal 3.0 ms
X 30 XE:
For engine speed lower than 2000 rpm with load signal 2.0 ms
For engine speed higher than 2000 rpm with load signal 3.0 ms