| No. | TECH 1 | Checking Conditions | Nominal Values | Trouble | Terminal |
|---|---|---|---|---|---|
| Display | Codes | ||||
| 17 | SPARK ADVANCE | Ignition ON | Approximately same | - | INTERNAL |
| Compare pre-ignition according | values approx. 5° CA | ||||
| to TECH 80 with TECH 1 display | BTDC* | ||||
| (F6:EST ADJUSTM.: TECH 1 mode "F6") |
Trouble-shooting: Nominal Value: Cause of Fault:
(If nominal value is not attained)
· This value is not an actual measured value, but rather an ignition value taken from the control unit with the precondition that basic adjustment has been carried out with a timing lamp (stroboscope) or TECH 80.
Its main function is to allow better comprehension of the system.
Basic adjustment in TECH 1 mode "F6". See also section 4.7.
* As of MY '92 the basic adjustment is again at 10° CA BTDC!