Air pump switchover valve position/task/design/function - GF14.30-P-3103F
ENGINE 104.941 /942 /943 /944 /991 /994 as of 1.8.96
ENGINE 104.995 A version with CODE (807) Model year 1997 with CODE (808) Model year 1998 with CODE (498) as of Model Year 97 Japanese version
ENGINE 111.961 with CODE (494a) USA version
ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998
ENGINE 111.973 /975 with CODE (494a) USA version with CODE (923a) low emission D3
ENGINE 119.980 /981 /982 /985 with CODE (494a) USA version with CODE (923a) low emission D3 with CODE (920a) with exhaust air pump (secondary air injection) as of 12/96
ENGINE 120.982 /983
ENGINE 104.941 /942 /991 /992 /994 with CODE (494a) USA version
| Air pump switchover valve arrangement | Engine 104, 119, 120 | GF14.30-P-3103-01F | |
| Engine 111 | GF14.30-P-3103-01G | ||
| Air pump switchover valve task | When actuated, the air pump switchover valve switches the vacuum from the intake manifold through to the air shutoff valve. This valve opens and the air supplied by the air pump is forced into the exhaust manifold. | ||
| Air pump switchover valve design/function | Air pump switchover valve is actuated by the engine control module through its own output stage simultaneously to the air pump by means of a GND signal. Voltage is supplied through the overvoltage protection relay (model 124, 202 up to 7/96), base module (model 129, 140), relay module (model 170, 210 up to 2/97) or the fuse and relay module (model 202 as of 8/96, model 210 as of 3/97, model 163 designation F1). |