F0:DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 41 | SPARK ADVANCE | Engine running at idle speed, operating temperature | |||
| Switch off all consumers | - | - | |||
| C 20 XE engine: | |||||
| C 25 XE engine: | 11 to 20 °CA BTDC |
1 to 10 °CA BTDC
Note:
11 to 20 °CA (nominal values for C 20 XE) and 1 to 10 °CA (nominal values for C 25 XE) are the values calculated by the control unit from various parameters (e.g. coolant temperature, intake air temperature, idle speed control); this does not mean that this ignition advance is actually present.
The firing angle cannot be adjusted.
Use TECH 80 to check whether the programmed and actual values match.
Notes on Trouble-shooting:
| Nominal Value: | Cause of Fault: |
· See test step 29
· See test step 30