Sequoia 4WD V8-4.7L (2UZ-FE) (2006)
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Temperature Gauge: Testing and Inspection
Engine Coolant Temperature Gauge Malfunction
DESCRIPTION
The ECM receives an engine coolant temperature signal from the engine coolant temperature sensor and sends it to the A/C ECU.
The combination meter receives the signal from the A/C ECU through multiplex communication. Therefore, If a malfunction occurs in the engine
coolant temperature receiver gauge, there may be a malfunction in the multiplex communication system, air conditioning system, or engine system.
Step 1
INSPECTION PROCEDURE