Output Of Diagnostic Codes

To obtain an output of diagnostic codes, proceed as follow: j

1. Initial conditions

(a) Battery voltage 11 volts or more

(b) Throttle valve fully closed (throttle position sensor , IDL points closed)

(c) Transmission in neutral position

(d) Accessories switched OFF

(e) Engine at reach normal operating temperature

2. Turn the ignition switch to ON. Do not start the engine.

3. Using a service wire, short terminals T and El of the check connector.

LOCATION: See page FI-89

4. Read the diagnostic code as indicated by the number of flashes of the check engine warning light.

Check Connector

Sequoia Check Engine List Codes

Check Connector

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