Toyota Sequoia (2005). Manual - part 605

–

DIAGNOSTICS

NAVIGATION SYSTEM

DI–2215

2409

3

Check cabin.

CHECK:
Check if condensation is likely to occur, or the temperature is high or low (extremely cold) in the cabin.
HINT:
This problem occurs when the cabin is humid and the temperature rapidly changes. This condition may pro-
duce condensation, resulting in a short circuit.
OK:

The above conditions are not observed.

NG

Set cabin temperature to appropriate degrees
(20 to 30

C) (68 to 86

F).

OK

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

PKB                 OFF

REV                 OFF

SPEED        49km/h

TAIL                 OFF

I28975

DI–2216

–

DIAGNOSTICS

NAVIGATION SYSTEM

2410

Illumination for panel switch does not come on with tail switch on

INSPECTION PROCEDURE

1

Display check mode (Vehicle signal check mode).

PREPARATION:
Enter the ”Display Check” mode (Vehicle Signal Check Mode)
(See page 

DI–2176

).

CHECK:
Turn the light control switch to the TAIL, HEAD or OFF position.
OK:

Light Control Switch

Display

TAIL or HEAD

ON

OFF

OFF

HINT:
The display is updated once per second. As a result, it is normal
for the display to lag behind the actual change in the switch.

OK

Replace radio and navigation assy.

NG

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

DIDCA–01

I28248

PKB                 OFF

REV                 OFF

SPEED        49km/h

TAIL                 OFF

I28975

–

DIAGNOSTICS

NAVIGATION SYSTEM

DI–2217

2411

Display does not dim (Night screen)  with tail switch on

INSPECTION PROCEDURE

1

Check image quality setting.

PREPARATION:
(a)

Enter the display adjustment screen by pressing the ”DIS-
PLAY” switch.

(b)

Turn the light control switch to the TAIL position.

CHECK:
Check if ”DAY MODE” on the display adjustment is ON.
OK:

”DAY MODE” is ON.

OK

Turn forced ”DAY MODE” setting off.

NG

2

Display check mode (Vehicle signal check mode).

PREPARATION:
Enter the ”Display Check” mode (Vehicle Signal Check Mode)
(See page 

DI–2176

).

CHECK:
Turn the light control switch to the TAIL, HEAD or OFF position.
OK:

Light Control Switch

Display

TAIL or HEAD

ON

OFF

OFF

HINT:
The display is updated once per second. As a result, it is normal
for the display to lag behind the actual change in the switch.

OK

Replace radio and navigation assy.

NG

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

DIDCC–01

I28249

DI–2218

–

DIAGNOSTICS

NAVIGATION SYSTEM

2412

Panel switch does not function

INSPECTION PROCEDURE

1

Check panel switch.

CHECK:
Check for foreign matter around the switch that might prevent operation.
OK:

No foreign matter is found.

NG

Remove any foreign matter found.

OK

2

Display check mode (Panel switch check mode).

PREPARATION:
Enter the ”Display Check” mode (Panel Switch Check Mode)
(See page 

DI–2176

).

CHECK:
Operate the abnormal switch and check if the switch name and
status are correctly displayed.
OK:

The switch name and status are correctly displayed
as operated.

OK

Replace radio and navigation assy.

NG

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2184

).

DIDCD–01