F0:DATA LIST
| No. | TECH 1 Display | |||
|---|---|---|---|---|
| Checking Conditions | Norminal Value | Trouble Code | Terminal | |
| 01 | CO CODING | Ignition ON |
Idle speed/CO coding disconnected
Idle speed/CO coding connected
1-pin plug connection in engine compartment, on the right in direction of travel, immediately beside the passageway for wiring harness to passenger compartment
INAKTIVE 5V
| ACTIVE 0V | 58 | 10/16 |
Note: TECH 1 checks the switch condition of the idle CO coding plug connection. This plug is only connected for CO adjustment, to increase the CO value to a measurable range.
Observe idle CO adjustment regulations in the Service Instructions.
Preconditions:
- Engine at idle speed
- Connect TECH 1 and CO tester
- Engine in good working order
- Oil temperature approx. 80 °C/176 °F
- Electrical consumers switched off
- Hose for crankcase ventilation removed
TECH 1 in mode F6 or coding plug connected. Adjust to 1.5 ± 0.5 VoI.- % CO at mix regulation bolt. Press "EXIT" key, or disconnect plug.
CO value sinks to 0.2 - 0.3 Vol.- % CO.
Notes on Trouble-shooting:
| Norminal Value: |
|---|
| Cause of Fault: |
· Ignition ON
Disconnect coding plug, read off from TECH 1
Reconnect coding plug
INACTIVE 5V
| ACTIVE 0V |
· Short circuit to ground in lead from control unit (Ter.10) to coding plug
· Lead interruption from control unit (Ter.10) to coding plug or plug (ground) to ground
· Loose contact in coding plug or control unit plug