Motronic M 1.5.4 Quick Check F0:DATA LIST
| No. | TECH 1-Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 27 | DESIRED IDLE | Engine running at idle speed, operating temperature |
Switch off all consumers
Note:
The idle speed can be reprogrammed, allowing the output speed to be changed by 50, 100 or 150 rpm. Perform the following diagnostic tester function:
F8:ECU CONTROL
RPM CONTROL
and
F6:ADJUSTMENTS
IDLE SPEED
The nominal idle speed may increase when:
| the intake air temperature (cf. Data List No. 05) is greater than 50 °C/122 °F or the battery voltage is very low (between 12.0 and 12.2 V) | 700 to 850 rpm | 19, 31 | - |