Stationary heater/heater booster test of electrical system fuel metering pump

AD83.70-P-6001-05B

Stationary heater/heater booster test of electrical system fuel metering pump

Model 129 as of 01.06.97 and model 210 as of 01.01.96 with stationary heater

Model 163 as of 01.09.01 with stationary heater

Model 210 as of 01.09.96 and model 168,202 with heater booster





Test of

Tester/test connection

Operation/

Requirement

Specified value

 Possible cause/

Remedy

1.0



- / / -,

|- -|+

Wiring

to fuel metering pump (Y23)

Model 129 as of 01.06.97 and model 210 as of 01.01.96 with stationary heater

Model 210 as of 01.09.96 and model 168, 202 with heater booster

Model 163 as of 01.09.01 with stationary heater

Connec-tor D

Y23

1 



Connec-tor D

Y23

 2

 Unplug connector at fuel metering pump

 Ignition: ON

Multimeter:

Display

no readout

 1.1

 1.2

1.1

Wiring

from stationary heater/heater booster control module (A6n1) to fuel metering pump (Y23)

Model 129 as of 01.06.97

Model 163 as of 01.09.01

Connec-tor D

Y23

1 



Connec-tor D

Y23

 2

 Unplug control cables connector (F):

if stationary heater fitted 

AD83.70-P-2001-01A

AD83.70-P-2001-01GH

if heater booster fitted 

AD83.70-P-2002-01A

Multimeter:

Display

no readout

 Cable short circuit to positive

 Stationary heater/heater booster control module (A6n1)

1.2

Wiring

from stationary heater/heater booster control module (A6n1) to fuel metering pump (Y23)



 Bridge connector of fuel metering pump

 Erase fault memory HHT/STAR DIAGNOSIS

 Actuate fuel metering pump

 Read out fault memory

Fault message HHT/STAR DIAGNOSIS:

Fuel metering pump Y23
|- -| -

Fuel metering pump Y23
- / / -, |- -|+

 Fuel metering pump (Y23)

 Cables and connections