Toyota Sequoia (2005). Manual - part 597

DIDC2–01

I28227

I28234

I28235

*1
*2

*3
*4

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DIAGNOSTICS

NAVIGATION SYSTEM

DI–2183

2377

NAVIGATION CHECK MODE (Parts Information)

HINT:

This mode displays product information on the radio and navigation assy and discs.

Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.

1.

Enter diagnostic mode (See page 

DI–2191

).

2.

Select ”Navigation Check” from the ”Diagnosis
MENU” screen.

3.

Select ”Parts Information” from the ”Navigation
Check” screen.

4.

Check the navigation and disc information when the
”Parts Information” screen is displayed.

Display

Contents

Navigation Manufacturer/*1

Radio and navigation assy manufacturer name is displayed.

Navigation Version/*2

Radio and navigation assy version is displayed.

Disc Manufacturer/*3

Map disc manufacturer is displayed.

Disc Version/*4

Map disc version is displayed.

DIDC3–01

DI–2184

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DIAGNOSTICS

NAVIGATION SYSTEM

2378

PROBLEM SYMPTOMS TABLE

HINT:

Before performing verification listed in the table below, check the fuse and relay.

Methods used to verify the cause of the problem are listed in order of probability in the verification col-
umn.

Display function

Symptom

Verification

See page

Pressing PWR switch does not turn on system.

1. ”PRESSING POWER SWITCH DOES NOT TURN ON

SYSTEM”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2213

DI–2256

–

Black screen (no image appears on navigation and audio screen).

1. ”BLACK SCREEN (NO IMAGE APPEARS ON NAV-

IGATION AND AUDIO SCREEN)”

2. Illumination circuit

3. Power source circuit (radio and navigation assy)

4. Replace radio and navigation assy

DI–2214

DI–2260
DI–2256

–

Illumination for panel switch does not come on with TAIL switch

on.

1. ”ILLUMINATION FOR PANEL SWITCH DOES NOT

COME ON WITH TAIL SWITCH ON”

2. Illumination circuit

3. Replace radio and navigation assy

DI–2216

DI–2260

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Display does not dim (night screen) with TAIL switch on.

1. ”DISPLAY DOES NOT DIM (NIGHT SCREEN) WITH

TAIL SWITCH ON”

2. Illumination circuit

3. Replace radio and navigation assy

DI–2217

DI–2260

–

Power does not turn off (screen remains on).

1. Power source circuit (radio and navigation assy)

2. Replace radio and navigation assy

DI–2256

–

Panel switch does not function.

1. ”PANEL SWITCH DOES NOT FUNCTION”

2. Steering pad switch circuit

3. Replace radio and navigation assy

DI–2218
DI–2287

–

Touch panel switch does not function.

1. ”TOUCH PANEL SWITCH DOES NOT FUNCTION”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2219
DI–2256

–

Display panel does not open, tilt, or tilts improperly.

1. ”DISPLAY PANEL DOES NOT OPEN, TILT, OR TILTS

IMPROPERLY”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2220

DI–2256

–

Screen is distorted.

1. Power source circuit (radio and navigation assy)

2. Replace radio and navigation assy

DI–2256

–

Screen flicker or color distortion.

1. ”SCREEN FLICKER OR COLOR DISTORTION”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2221
DI–2256

–

Audio function

Symptom

Verification

See page

No sound can be heard from speakers (audio is mute).

1. ”NO SOUND CAN BE HEARD FROM SPEAKERS

(AUDIO IS MUTE)”

2. Speaker circuit

3. AVC–LAN circuit (radio and navigation – stereo compo-

nent amplifier)

4. Amplifier sound signal circuit

5. Amplifier mute signal circuit

6. Replace stereo component amplifier

7. Replace radio and navigation assy

DI–2224

DI–2282
DI–2268

DI–2274
DI–2271

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–

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DIAGNOSTICS

NAVIGATION SYSTEM

DI–2185

2379

Radio broadcast cannot be received (poor reception).

1. ”RADIO BROADCAST CANNOT BE RECEIVED

(POOR RECEPTION)”

2. Replace radio and navigation assy

DI–2225

–

CD cannot be inserted/played or CD is ejected right after inser-

tion.

1. ”CD CANNOT BE INSERTED/PLAYED OR CD IS

EJECTED RIGHT AFTER INSERTION”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2228

DI–2256

–

CD cannot be ejected.

1. ”CD CANNOT BE EJECTED”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2231
DI–2256

–

Abnormal noise occurs.

1. ”ABNORMAL NOISE OCCURS”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2233
DI–2256

–

CD sound skips.

1. ”CD SOUND SKIPS”

2. Replace radio and navigation assy

DI–2234

–

Poor sound quality in all modes (low volume).

1. ”POOR SOUND QUALITY IN ALL MODES (LOW VOL-

UME)”

2. AMP mute signal circuit

3. Replace radio and navigation assy

4. Replace stereo component amplifier

DI–2236

DI–2271

–
–

Navigation function

Symptom

Verification

See page

Map disc cannot be inserted.

1. ”MAP DISC CANNOT BE INSERTED”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2237
DI–2256

–

Map disc cannot be ejected.

1. ”MAP DISC CANNOT BE EJECTED”

2. Power source circuit (radio and navigation assy)

3. Replace radio and navigation assy

DI–2238
DI–2256

–

Vehicle position mark deviates greatly.

1. ”VEHICLE POSITION MARK DEVIATES GREATLY”

2. Replace GPS antenna assy

3. Replace radio and navigation assy

DI–2239

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–

Cursor or map rotates when vehicle is stopped.

1. ”CURSOR OR MAP ROTATES WHEN VEHICLE IS

STOPPED”

2. Replace radio and navigation assy

DI–2241

–

Vehicle position mark is not updated.

1. ”VEHICLE POSITION MARK IS NOT UPDATED”

2. Replace map disc

3. Replace radio and navigation assy

DI–2242

–
–

Current position display does not appear.

1. ”CURRENT POSITION DISPLAY DOES NOT AP-

PEAR”

2. Replace map disc

3. Replace radio and navigation assy

DI–2244

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–

GPS mark does not displayed.

1. ”GPS MARK IS NOT DISPLAYED”

2. Replace GPS antenna assy

3. Replace radio and navigation assy

DI–2245

–
–

Voice guidance does not function.

1. ”VOICE GUIDANCE DOES NOT FUNCTION”

2. Speaker circuit

3. Replace map disc

4. Replace radio and navigation assy

DI–2248
DI–2282

–
–

DI–2186

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DIAGNOSTICS

NAVIGATION SYSTEM

2380

Map display incomplete.

1. ”MAP DISPLAY INCOMPLETE”

2. Replace map disc

3. Replace radio and navigation assy

DI–2251

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–

Route cannot be calculated.

1. ”ROUTE CANNOT BE CALCULATED”

2. Replace map disc

3. Replace radio and navigation assy

DI–2252

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–

Steering pad switch assy function

Symptom

Verification

See page

The system cannot be operated by the steering pad switch.

1. Steering pad switch circuit

2. Replace radio and navigation assy

DI–2287

–

Illumination for steering pad switch does not come on with TAIL

switch on.

1. Steering pad switch circuit

2. Replace radio and navigation assy

DI–2287

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