AV
AV
AV
AV
Audio/
Audio/
Audio/
Audio/ Video
Video
Video
Video System
System
System
System
- 122 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
2. No r adio display with the parking lamp on.
Step Operation
Yes
No
1
① Turn the ignition key to ACC position.
②
Turn on the radio.
③ Turn the parking lamp.
④
Adjust the instrument panel lamp dimmer switch.
Does the fluorescent shield display of radio operate normally?
Check harness. Go to Step 2.
2
T
est the DC dimmer signal circuit for:
O pen circuit
H igh resistance
S hort circuit to ground
P oor contact
Is the fault detected and eliminated?
Go to Step 6. Go to Step 3.
3
I n the DC dimmer signal circuit , test the output DC voltage of the headlamp and
instrument panel lamp dimmer switch.
D oes the voltage change with the rotation of instrument panel lamp dimmer
switch?
Go to Step 4. Go to Step 5.
4
Replace the radio.
Is the maintenance finished?
Go to Step 6. —
5
R eplace headlamp and instrument panel lamp dimmer switch.
Is the maintenance finished?
Go to Step 6. —
6
Operate the system to check the maintenance result.
Is the fault eliminated?
System is intact. Go to Step 1.
To Next Page
Loading...