Toyota Tundra Service Manual: Problem Symptoms Table



  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in the order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Engine Immobiliser System


Suspected Area


Engine does not start because no initial combustion occurs

Proceed to "Engine does not Start because No Initial Combustion"

Engine does not start but initial combustion occurs

Proceed to "Engine does not Start but Initial Combustion Occurs"

Security indicator light does not blink

Proceed to "Security Indicator Light Does not Blinking"

Key cannot be registered

Proceed to "Key Cannot be Registered"



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    On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. REMOVE STARTER RELAY (ST) (a) Remove the engine room relay box cover. (b) Remove the starter relay from the engine room relay block. 2. INSPECT STARTER RELAY (a) Measure the resistance according to the value(s) in the table below. Standard Res ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

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