Toyota Camry (XV70): System Diagram
SYSTEM DIAGRAM
w/ Manual (SOS) Switch
w/o Manual (SOS) Switch
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System Description
SYSTEM DESCRIPTION NAVIGATION SYSTEM OUTLINE (a) Vehicle position tracking methods
It is essential that the navigation system correctly tracks the current vehicle position and displays it on the map
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the navigation system.
*: Use the Techstream.
PROCEDURE
1. VEHICLE BROUGHT TO WORKSHOP
Operation Check
OPERATION CHECK CHECK NAVIGATION SYSTEM NORMAL CONDITION
(a) If the cause of a symptom is any of the following, the corresponding symptom is normal; it is not due to a malfunction.
Symptom A
SEE MORE:
Extension Module Malfunction 2 (B1556)
DESCRIPTION These DTCs are stored when a malfunction occurs in the Navigation ECU.
DTC No. Detection Item
DTC Detection Condition Trouble Area
B1556 Extension Module Malfunction 2
When any of the following conditions is met:
Internal power supply malfunction
Inspection
INSPECTION PROCEDURE 1. INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified Condition
1 - 2 20°C (68°F)
33 to 39 Ω
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