STEERING WHEEL AUDIO REMOTE CONTROL SWITCH CHECK
Switch Position
 Tester Connection
 Resistance
"MODE" switch pushed
 1 - 2
 Approximately 270 Ω
"CH UP" switch pushed
 Approximately 740 Ω
"CH DOWN" switch pushed
 Approximately 1.3 kΩ
"VOL UP" switch pushed
 Approximately 2.1 kΩ
"VOL DOWN" switch pushed
 Approximately 3.1 kΩ

ILLUMINATION CHECK
Apply the battery voltage to the connector terminal No. 3, earth the terminal No. 4, and then check that the illumination lights up.