jaguar Workshop Repair Guides

Jaguar Workshop Service and Repair Manuals

Diagnostic Trouble Code Tests and Associated Procedures|Page 2877 > < Diagnostic Trouble Code Tests and Associated Procedures|Page 2875
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Coolant Temperature Sensor/Switch (For Computer): Pinpoint Tests

Pinpoint Test A

Pinpoint test A: P0116, P0125, P0116, P0125 

A1: RETRIEVE DTCS 

NOTE:  Battery and/or ECM disconnection prior to scanning will erase all data, ensure that the correct DTC is present.

Connect scan tool
Record DTC(s), freeze frame data &
GO to [A2]

A2: ENGINE COOLANT SYSTEM CHECK 

NOTE:  Do not use the instrument display. If the ECT has failed this will not operate correctly.

Check engine temperature rise using a thermocouple or similar device.
-

Engine temperature increasing?
-> Yes

GO to [A3]

-> No

Check coolant level
Check coolant for contamination
Check/test thermostat

A3: CHECK ECT SENSOR RANGE 

Diagnostic Trouble Code Tests and Associated Procedures|Page 2877 > < Diagnostic Trouble Code Tests and Associated Procedures|Page 2875