Light Control Rheostat: Inspection

INSPECT LIGHT CONTROL RHEOSTAT

Disconnect the connector from the light control rheostat.

Fig 1: Identifying Claws On Light Control Rheostat
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
E55-1 (TC) - E55-3 (T)	Turn the light control rheostat knob fully downwards	Below 1 Ω
E55-1 (TC) - E55-3 (T)	Turn the light control rheostat knob fully upwards	8 kΩ or higher
E55-3 (T) - E55-4 (RV)	Turn the light control rheostat knob fully downwards	Below 1 Ω
E55-3 (T) - E55-4 (RV)	Turn the light control rheostat knob downwards to upwards	The value changes gradually (Between below 1 to 8 kΩ)
E55-3 (T) - E55-4 (RV)	Turn the light control rheostat knob fully upwards	8 to 12 kΩ

HINT:

If the value is not as specified, replace the light control rheostat.

Fig 2: Identifying Light Control Rheostat Connector Terminals