AD07.61-P-6000-26A | Secondary air injection - Testing electrical system, ME-SFI gasoline injection system | with CODE (925) low-emission EURO3 |
| Scope of test | Tester/test connection | Operation/ prerequisite | Specified value | Possible cause/ remedy | ||
1.0 | Secondary air injection (causal chain) with CODE (925) low-emission EURO3 |
23 (31C) 3 (3A) 3 (3A) |
N3/10 N3/10 |
24 (32C) 66 (10E) 20 (28C) | Note: Measurement is on the oxygen sensor signal upstream of TWC. At coolant temperature > 80 °C allow engine to idle for at least 2 minutes. Insert bridges at socket box. | Voltage of oxygen sensor surges in the range of -0.2 V to +1.0 V Air pump running Voltage changes to <100mV within 20 s | Secondary air injection switchover valve (Y32) Combination valve for secondary air injection Air pump no output |