F0:DATA LIST
| No. | TECH 1 Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 04 | SIM. FULL POS. SW | Engine running at idle speed |
Throttle valve CLOSED
(accelerator pedal in idle position)
Actuate accelerator pedal slightly
Depress accelerator pedal briefly to full load stop (full throttle)
INACTIVE
INACTIVE
| ACTIVE | 21, 22 | - |
|---|---|---|
| Note: | ||
| In test steps 03 (SIM. IDLE POS. SW) and 04 (SIM. FULL POS. SW), the Motronic control unit uses the throttle valve potentiometer signal to calculate a simulation for the throttle valve switch idle and full load contacts. |
The Motronic control unit needs this information for the idle air control (SIM. IDLE POS. SW) and for the full load enrichment and oxygen sensor control Cutoff (SIM. FULL POS. SW).
| Notes on Trouble-shooting: | Nominal Value: | Cause of Fault: |
· Ignition ON
| · Disconnect plug from throttle valve potentiometer P 34 (C 25 XE: removal of P 34 required). | ||
|---|---|---|
| greater than 4.9 V | · Short circuit between Ter. 3 (signal lead) |
and Ter. 2 (ground)
· Short circuit to ground in lead from control unit K 61 / Ter. 53 to throttle valve potentiometer P 34 / Ter. 3
· Control unit K 61 defective
| · Bridge Ter. 2 with Ter. 3 in throttle valve potentiometer plug |
|---|
| less than 0,1 V |
· Lead interruption from
- control unit K 61 / Ter. 30 to throttle
valve potentiometer Ter. 1
- control unit K 61 / Ter. 53 to throttle valve potentiometer Ter. 3
| · Control unit K 61 defective | ||
|---|---|---|
| greater than 4.9 V | · Lead interruption or short circuit to ground from control unit K 61 / Ter. 12 to throttle valve potentiometer plug P 34 / Ter. 2 |
· Throttle valve potentiometer P 34 defective