AD07.61-P-6000-26D | Secondary air injection (AIR), testing electrical system of fuel injection system (ME-SFI) |
| Scope of test | Measuring instrument/ Test connection | Operation/Requirement | Specified value | Possible cause/Remedy | ||
1.0 | Secondary air injection (functional chain) |
23 (31C) 3 (3A) 3 (3A) |
N3/10 N3/10 |
24 (32C) 66 (10E) 20 (28C) | The O2S signal is measured before TWC Allow engine to idle for at least 2 minutes at an engine coolant temperature of > 80°C Insert bridges at socket box |
O2S voltage fluctuates in range between 0.2 V and +1.0 V Air pump runs and voltage changes to < 100 mV within 20 seconds | AIR pump switchover valve (Y32) Combination valve for secondary air injection No air pump output |