Geely CK Series 2007 Workshop Manual page 234

2. The radio backlight does not light up with the illumination switch ON
Wiring Diagram
Light
Control
Switch
Battery
(1) Check radio assembly (TAIL)
Check the voltage between terminals under each operating condition as shown in the table below.
Standard:
Tester Connection
TAIL - GND
Abnormal: Repair or replace wire harness and connector
Normal: Check and replace radio assembly
Main Fuse Box
Fusible Link Box
Battery
Condition
Combined Switch (Light switch)
Radio and CD
Standard Status
10 ～ 14V
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