Page 2809 of 3189
Ignition Signal CheckNJEL0609
1 IGNITION SIGNAL CHECK
1. Disconnect the AV and NAVI control unit connector.
2. Turn the ignition switch ON.
3. Check voltage between AV and NAVI control unit and ground.
SKIA1413E
MTBL1523
OK or NG
OK Replace AV and NAVI control unit.
NG Check harness for open or short between AV and NAVI control unit and fuse.
GI
MA
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LC
EC
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IDX
NAVIGATION SYSTEM
Ignition Signal Check
EL-473
Page 2810 of 3189
Reverse Signal Check=NJEL0610
1 REVERSE LAMP CHECK
1. Turn the ignition switch ON.
2. A/T Shift selector lever into R-position. Does “R” in the shift positionindicator come on?
YesorNo
Ye s G O T O 2 .
No Check park/neutral position relay system. AT-408, “Park/Neutral Position (PNP) Switch
Adjustment”.
2 REVERSE SIGNAL CHECK
1. With the selector lever in R-position.
2. Check voltage between AV and NAVI control unit and ground.
SKIA1414E
MTBL1524
OK or NG
OK Replace AV and NAVI control unit.
NG Check harness for open or short between AV and NAVI control unit and park/neutral
position relay.
NAVIGATION SYSTEM
Reverse Signal Check
EL-474
Page 2811 of 3189
RGB Screen Is Not ShownNJEL0611
1 HARNESS CHECK
1. Turn the ignition switch OFF.
2. Disconnect AV and NAVI control unit connector and Display connector.
3. Check continuity between AV and NAVI control unit and Display.
SKIA1415E
MTBL1525
4. Check continuity between AV and NAVI control unit and ground.
MTBL1526
OK or NG
OK GO TO 2.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
GI
MA
EM
LC
EC
FE
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IDX
NAVIGATION SYSTEM
RGB Screen Is Not Shown
EL-475
Page 2812 of 3189
2 HORIZONTAL SYNCHRONIZATION SIGNAL CHECK
1. Connect AV and NAVI control unit connector and Display connector.
2. Turn the ignition switch ON.
3. Check voltage signal between AV and NAVI control unit connector terminals 13 (BR) and 17 with oscilloscope or CON-
SULT-ll.
SKIA1416E
13 (BR)-17: EL-450, “Terminals and Reference Value for AV and NAVI ControlUnit”
OK or NG
OK GO TO 3.
NG Replace the display unit.
3 RGB AREA SIGNAL CHECK
1. Press “INFO” switch.
2. Check voltage signal between AV and NAVI control unit connector terminals 12 (R) and 17with oscilloscope or CON-
SULT-ll.
SKIA1417E
12 (R)-17: EL-450, “Terminals and Reference Value for AV and NAVI Control Unit”
OK or NG
OK Replace the display unit.
NG Replace AV and NAVI control unit.
NAVIGATION SYSTEM
RGB Screen Is Not Shown (Cont’d)
EL-476
Page 2813 of 3189
No Screens Appear=NJEL0612
1 CHECK SYMPTOM
Check possibility to operate air conditioning and audio unit by multifunction switch.
OK or NG
OK GO TO 2.
NG EL-497, “System Does Not Start”.
2 DISPLAY UNIT POWER SYSTEM HARNESS CHECK
Check voltage between Display unit and ground. EL-469, “Check Display Unit, Multifunction Switch Power, and Ground
Circuit”.
OK or NG
OK Replace the display unit.
NG Open or short in display unit power system harness.
Color of RGB Image Is Not ProperNJEL0613
1 COLOR BAR DIAGNOSIS CHECK
Check color tone by “SCREEN ADJUSTMENT” of CONFIRMATION/ADJUSTMENT function.
OK or NG
OK INSPECTION END.
NG GO TO 2.
GI
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NAVIGATION SYSTEM
No Screens Appear
EL-477
Page 2814 of 3189
2 HARNESS CHECK-1
1. Turn the ignition switch OFF.
2. Disconnect AV and NAVI control unit connector and Display connector.
3. Check continuity between AV and NAVI control unit and Display.
4. Check continuity between AV and NAVI control unit and ground.
When the screen looks bluish
SKIA1418E
MTBL1527
MTBL1528
OK or NG
OK GO TO 3.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
NAVIGATION SYSTEM
Color of RGB Image Is Not Proper (Cont’d)
EL-478
Page 2815 of 3189
3 HARNESS CHECK-2
1. Check continuity between AV and NAVI control unit and ground.
When the screen looks reddish
SKIA1419E
MTBL1529
MTBL1530
OK or NG
OK GO TO 4.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NAVIGATION SYSTEM
Color of RGB Image Is Not Proper (Cont’d)
EL-479
Page 2816 of 3189
4 HARNESS CHECK-3
1. Check continuity between AV and NAVI control unit and ground.
When the screen looks yellowish
SKIA1420E
MTBL1531
MTBL1532
OK or NG
OK GO TO 5.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
NAVIGATION SYSTEM
Color of RGB Image Is Not Proper (Cont’d)
EL-480