Motronic M 1.5.4 Quick Check F0:DATA LIST
| No. | TECH 1-Display | Conditions for Checking | Nominal Value | Trouble Codes | Terminal |
|---|---|---|---|---|---|
| 17 | SEC. AIR PUMP REL | Engine running at idle speed, cold | |||
| ACTIVE 0V | |||||
| 46, 47 | 6 | ||||
| Engine running at idle speed, operating temperature (coolant temperature above 60 °C (140 °F)) | |||||
| INACTIVE 12V | |||||
| Alternative check, if engine is already warm: |
Engine warm
Disconnect coolant temperature sensor P30
Note:
| When coolant temperature sensor is disconnected a trouble code is set when the engine is switched off. The trouble code must be deleted the next time the engine is started and the coolant temperature sensor is connected. | ACTIVE 0V |
IMPORTANT:
If the secondary air pump is not actuated the thermo protective switch in the pump might have interrupted the circuit. Let the engine cool down and repeat the test.