Home/Opel/Tigra/Opel Tigra A (1995-2000)/Repair manual/Fuel Injection Systems/F0:Data List Test Step 07 Coolant Temperature
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F0:Data List Test Step 07 Coolant Temperature Opel Tigra A

Multec- S X 14 XE / X 16 XE (L) F0:DATA LIST

No.TECH 1 DisplayConditions for CheckingNominal ValueTrouble CodesTerminal
07COOLANT TEMP.Engine running at idle speed, operating temperature85 to 110 °C/

185 to 230 °F

2.21 to 1.43 V14, 15B3; B2
Notes on Trouble-shooting:Nominal Value:Cause of fault:

(If nominal value is not attained)

· Ignition OFF

· Disconnect wiring harness plug from:

P30 coolant temperature sensor

X10 plug, engine & injectors

(Corsa- B, Tigra)

· Ignition ON

· Using multimeter, measure voltage:

from: P30 wiring harness plug for coolant temperature sensor Ter. 2

to: ground

4.9 to 5.1 V· Short circuit to voltage

(with measured value higher than 5.1 V) or short circuit to ground/circuit interruption

(with measured value lower than 4.9 V)

from: K57 wiring harness plug for engine control unit Ter. B3

to: P30 wiring harness plug for coolant temperature sensor Ter. 2

· K57 engine control unit defective

· Bridge wiring harness plug

from: P30 wiring harness plug forcoolant temperature sensor Ter. 1

to: P30 wiring harness plug for coolant temperature sensor Ter. 2

· TECH 1 data list no. 07 COOLANT TEMP.

higher than 145°C/293 °F

lower than 0.1 V

· Short circuit to voltage or circuit interruption

from: P30 wiring harness plug for coolant temperature sensor Ter. 1

to: K57 wiring harness plug for engine control unit Ter. B2

· K57 engine control unit defective

· Using multimeter, measure resistance:

from: P30 coolant temperature sensor Ter. 1

to: P30 coolant temperature sensor Ter. 2

Temperature Resistance

[°C] [kW]

0 approx. 5.9

20 approx. 2.5

50 approx. 0.8

100 approx. 0.2

· P30 coolant temperature sensor defective

· Check according to data list no. 05, TPS SIGNAL

Nominal values OK
· Remedy according to data list no. 05, TPS SIGNAL
· Check according to data list no. 25, EGR POS. FDBKNominal values OK· Remedy according to data list no. 25, EGR POS. FDBK