Pinpoint Tests At: Engine Coolant Temperature And Engine Oil Temperature Correlation: Introduction

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WARNING: STRICT OBSERVANCE OF POSTED SPEED LIMITS AND ATTENTION TO DRIVING CONDITIONS ARE MANDATORY WHEN CARRYING OUT THE ROAD TEST. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

This pinpoint test is intended to diagnose the following:
low engine coolant level
cooling system flow restriction
engine coolant temperature (ECT) sensor (12A648)
engine oil temperature (EOT) sensor (12A648)