Volvo TSI, Manual

Page: 181 / 250

Group 28 Troubleshooting
MID 128 SID 64 Redundant En-
gine Speed Sensor, Check
Special tools: J-43233, J-39200, J-41132
D7C only
NOTE!
Check all the particular connectors for loose connections
as well as for switch resistance and oxidation.
For detailed circuit information, refer to “VNL, VNM Elec-
trical Schematics,” Group 37.
Measurement at the component’s
connector, to the EECU
1
Note: An incorrect value (below) can
also cause the component to fail;
therefore, it is important to check the
component if any of the values are in-
correct.
2
Disconnect the connector to the en-
gine position sensor. Install breakout
harness 9998534 to the wiring har-
ness end only.
9998534
Ground wire:
3
Measure the resistance with ohmme-
ter J-39200.
Ignition key must be in the OFF posi-
tion.
Measuring
points Optimal value
2 / alternate
ground 48 k
J-39200
Supply wire:
4
Measure the voltage with voltmeter J-
39200.
Ignition key must be in the ON posi-
tion.
Measuring
points Optimal value
1 / alternate
ground 2 V
J-39200
Check of component
Redundant engine speed sensor
1
Disconnect the connector to the re-
dundant engine speed sensor. Install
breakout harness J-43233 to the sen-
sor harness end only.
Measure the resistance with ohmme-
ter J-39200.
Ignition key must be in the OFF posi-
tion.
Measuring
points Optimal value
1 / 2 775 - 945
1 / alternate
ground open circuit
2 / alternate
ground open circuit
J-43233
J-39200
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