Self-Diagnosis - Yamaha T135SE Service Manual

SELF-DIAGNOSIS

The T135SE/S features a self-diagnosing system for following circuit (-s).
1. Throttle position sensor (TPS)
2. Thermo sensor
1. ENGINE TROUBLE INDICATOR LIGHT
When the main switch is turned to "ON", the following items are monitored and the condition codes are
displayed on the coolant temperature warning indicator light (irrespective of whether the engine is run-
ning or not).
Item
Throttle position sen-
sor (TPS)
Thermo sensor
Condition
9 Enables the vehicle to run so
Disconnected
that the ignition timing is
Short-circuit
fixed when the throttle is fully
opened.
9 Displays the condition code
Locked
on the coolant temperature
warning indicator light.
9 Enables the vehicle to run so
that the ignition timing is
fixed.
Disconnected
9 Displays the condition code
Short-circuit
on the coolant temperature
warning indicator light.
8-44
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SELF-DIAGNOSIS
Response Display condition code
Blinks in
Fault code [1]
Blinks in
Fault code [2]
Blinks in
Fault code [3]
ELEC