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Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 3452 > < Camshaft Position Sensor|Locations|Page 3448
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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

Engine Coolant Temperature Sensor, Checking

Observe all safety precautions: => [ Safety Precautions ] See: Computers and Control Systems/Service Precautions/Safety Precautions

View clean working conditions: => [ Clean Working Conditions ] See: Computers and Control Systems/Service Precautions/Clean Working
Conditions

Prior to repair work, perform a preliminary check to verify the condition. Refer to => [ Preliminary Check ] See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check.

Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.

For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.

Special tools, testers and auxiliary items required

‹› Generic scan tool

‹› Multimeter

‹› Wiring diagram

Test requirements

‹›  The Motronic Engine Control Module (ECM) ( J623 ) fuses OK.

‹› Battery voltage at least 12.5 volts.

‹› All electrical consumers such as, lights and rear window defroster, switched off.

‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".

‹› A/C switched off.

‹› Ground (GND) connections between engine/transmission/chassis OK.

‹› Ignition switched off.

‹› Engine cold.

Test procedure

Start diagnosis

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Connect the scan tool.

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 3452 > < Camshaft Position Sensor|Locations|Page 3448