| Test | TECH 1 | Notes | Nominal Values | Possible |
|---|---|---|---|---|
| Step | Display | Trouble | ||
| No. | Codes | |||
| 16 | RON CODING * | Ignition ON | ||
| Engine at idle speed | SUPERGRADE unleaded | |||
| Operating temperature | 0.22 kW 95 octane | - |
Trouble-shooting: Nominal Value: Cause of Fault:
(If nominal values are not attained)
· Ignition OFF A and B 220 ohms · Coding plug defective
Remove coding plug B and C 0 ohms · With actual value 470 ohms: incorrect coding
Check resistance at coding plug (98 octane is not permissible).
plug with multimeter
· Ignition ON 4.9 to 5.1 volts · Lead interruption from control unit
With multimeter (20V/DC), K 100 Ter. D 11 to wiring harness plug X 15
measure voltage at plug X 15 · Control unit
between brown/blue and ground
and also at control unit between
K 100 Ter. D 11 and ground.
· Ignition OFF Passage way · Lead interruption from control unit
With multimeter, resistance at (< 3 W) K 100 Ter. D 2 to wiring harness plug X 15
brown wiring harness plug to
K 100 Ter. D 2
* A yellow octane number plug is available as a field remedy. This plug is for the same octane number but is equipped with a different resistance.