Volvo TSI, Manual

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Group 28 Troubleshooting
MID 128 PPID 119 High Coolant
Temperature, Check
(D12B, D12C, D7C Engines)
Special tools: 9998534, J-43233, J-39200, J-
41132
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
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 incorrect.
1
Disconnect the connector to the
coolant temperature sensor. Install
breakout harness 9998534 to the
wiring harness end only.
9998534
Ground wire:
2
Measure the resistance using DMM J-
39200.
Ignition key must be in the OFF posi-
tion.
Measuring
points Optimal value
2 / alternate
ground <1
J-39200
Signal wire:
3
Measure the resistance using DMM J-
39200.
Ignition key must be in the OFF posi-
tion.
Measuring
points Optimal value
1 / alternate
ground 1.4 k
J-39200
Check of Component
Note: Faults in the component can be caused by faults
in the wiring harness of the EECU. Thus, a check of the
wiring harness should also be made before connecting a
new component.
Coolant Temperature Sensor
1
Disconnect the connector to the
coolant temperature sensor. Install
breakout harness 9998534 to the sen-
sor harness end only.
9998534
2
Measure the resistance with DMM J-
39200.
Ignition key must be in the OFF posi-
tion.
Note: A coolant tempera-
ture/resistance chart is available; see
“System Check” in Service Publication
200–870, “Fault Codes, Engine Elec-
tronic Control Unit,” order number
PV776–TSP105620/1.
Measuring
points Optimal value
1 / 2 1.9 k / 20 C
(68 F)
1 / 2 160 / 85 C
(185 F)
1 / alternate
ground open circuit
2 / alternate
ground open circuit
J-39200
148