Parts Location
PARTS LOCATION
ILLUSTRATION
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.
Expression |
Ignition Switch (Position) |
Engine Switch (Condition) |
---|---|---|
Ignition Switch off |
LOCK |
Off (Lock) |
Ignition Switch ACC |
ACC |
On (ACC) |
Ignition Switch ON |
ON |
On (IG) |
Engine Start |
START |
Start |
System Diagram
SYSTEM DIAGRAM
Data List / Active Test
DATA LIST / ACTIVE TEST
1. PERFORM ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Main Body
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Vehicle Horn |
Vehicle horns |
ON/OFF |
- |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
HORN SYSTEM
Symptom |
Suspected Area |
See page |
---|---|---|
Horn does not sound |
HORN fuse |
- |
HORN relay |
|
|
Horn button assembly |
- |
|
Steering pad switch assembly |
|
|
Spiral cable with sensor sub-assembly |
|
|
Driver side junction block |
- |
|
Harness or connector |
- |
|
Horn blows all the time |
HORN relay |
|
Horn button assembly |
- |
|
Steering pad switch assembly |
|
|
Spiral cable with sensor sub-assembly |
|
|
Driver side junction block |
- |
|
Main body ECU (Multiplex network body ECU) |
- |
|
Harness or connector |
- |
How To Proceed With Troubleshooting
HOW TO PROCEED WITH TROUBLESHOOTING
1. OPERATION FLOW
HINT:
Perform troubleshooting in accordance with the procedures below. The following
is an outline of basic troubleshooting procedures. Confirm the troubleshooting procedures
for the circuit you are working on before beginning troubleshoot ...
Cursor or Map Rotates when Vehicle Stopped
PROCEDURE
1.
CHECK CONDITION
(a) Check with the customer if the vehicle has been turned by a turntable.
OK:
Vehicle has not been turned by a turntable.
HINT:
If the vehicle is turned on a turntable with the ignition switch ON,
the system ...
Transmitter ID not Registered (C2171/71)
DESCRIPTION
The IDs of each tire pressure warning valve and transmitter are registered to
the tire pressure warning ECU and receiver.
When the ECU detects that a transmitter ID code is not registered in the ECU,
this DTC is stored.
DTC No.
Detection Item
DTC D ...