Volkswagen Passat 1995 Official Factory Repair Manual page 1650

Electrical wiring and component checks
Test table
- Measuring range: Switch to voltage measurement-V-.
Test Item checked
step
Motronic ECM
(J220) DTC memory
voltage supply
Motronic ECM
(J220) DTC memory
voltage supply via
main relay (J271))
Wiring to fuel pump
relay (J17)
Mass Air Flow
sensor (G70)
voltage supply
1)
Observe notes
2)
Connector pin assignment
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Test conditions
- additional work
Ignition switched off
Ignition switched off
- Bridge sockets 9 + 55 on
Test Box
Switch ignition on
Ignition switched on
- disconnect harness
connector from Mass Air Flow
sensor and connect
multimeter to terminals 1 + 3
of connector
Page 01-41
Page 01-56
Test
Box
sockets
2)
, Fig. 8
Page 3 of 16
Specifications
1)
1 + 54 Approx. battery
voltage
1 + 23 Approx. battery
voltage
Bridge Fuel pump must
run audibly
6 + 55
Bridge Approx. battery
voltage
6 + 55
6/12/2004
01-43