F0: DATA LIST
| No. | Tech 1 Display | Conditions for checking | Nominal value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 35 | 02 SENSOR LOOP | X 20 SE, X 22 XE engine only: | |||
| Engine running at idle speed, cold | |||||
| OPEN | 13, 38, 39 | - | |||
| Engine running at idle speed, operating temperature | CLOSED | ||||
| Depress accelerator pedal briefly to full load stop (accelerate fully) | OPEN | ||||
| Troubleshooting | Nominal value | Cause of Fault |
· Ignition "ON"
· Disconnect wiring harness plug for oxygen sensor P32
· Lift vehicle
· Measure voltage between plug for oxygen sensor P32 / Ter. C and
| Ter. A on control unit side | 400 to 500 mV | · Short circuit or lead interruption from |
- Motronic control unit K61 / Ter. 28 to oxygen sensor P32 / Ter. C
- Motronic control unit K61 / Ter. 10 to ground
- oxygen sensor P32 / Ter. A to ground
or
· Motronic control unit K61 defective
· Allow engine to run at 1200 to 1600 rpm at coolant temperature = 85 °C / 185 °F
· Measure voltage at Ter. C to Ter. A with engine running (using adapter lead)
| Voltage change between | ||
|---|---|---|
| 0 to 1000 mV | · Mixture constantly too rich (see test step 39) | |
| · Mixture constantly too lean (see test step 39) | ||
| · Measure voltage at Ter. A to Ter. B (using adapter lead) | 11.5 to 13.5 V | · Oxygen sensor heating defective |
· Lead interruption from
- fuel injection unit relay K68 / Ter. 4 to oxygen sensor P32 / Ter. B
- oxygen sensor P32 / Ter. A to ground
| If nominal values are attained: | · Oxygen sensor P32 defective |
|---|---|
| · Motronic control unit K61 defective |