LIGHT CONTROL RHEOSTAT INSPECTION
PROCEDURE
INSPECT LIGHT CONTROL RHEOSTAT
*a
Knob
*b
Component without harness connected
(Light Control Rheostat)
Inspect the light control rheostat.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Switch Condition
Specified Condition
7 (T) - 1 (E)
Always
10 +/-2 kΩ
3 (TR) - 1 (E)
Knob turned fully upward
10 +/-2 kΩ
3 (TR) - 1 (E)
Knob turned fully downward
Below 50 Ω
3 (TR) - 1 (E)
Knob turned from fully upward to fully downward
10 +/-2 kΩ → Below 50 Ω
If the result is not as specified, replace the light control rheostat.
-
*a
Knob
*b
Component without harness connected
(Light Control Rheostat)
Inspect the TAIL cancel switch.
Tip:The TAIL cancel switch is built into the light control rheostat.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Switch Condition
Specified Condition
7 (T) - 5 (TC)
Knob turned fully upward
(TAIL cancel condition)
10 kΩ or higher
7 (T) - 5 (TC)
Knob not turned fully upward
Below 1 Ω
If the result is not as specified, replace the light control rheostat.