DIAGNOSIS SYSTEM
1. CHECK BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
2. CHECK DLC3
(a) The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
Symbol (Terminal No.) |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|
SIL (7) - SG (5) |
Bus "+" line |
During transmission |
Pulse generation |
CG (4) - Body ground |
Chassis ground |
Always |
Below 1 Ω |
SG (5) - Body ground |
Signal ground |
Always |
Below 1 Ω |
BAT (16) - Body ground |
Battery positive |
Always |
11 to 14 V |
CANH (6) - CANL (14) |
CAN bus line |
Ignition switch off* |
54 to 69 Ω |
CANH (6) - CG (4) |
HIGH-level CAN bus line |
Ignition switch off* |
200 Ω or higher |
CANL (14) - CG (4) |
LOW-level CAN bus line |
Ignition switch off* |
200 Ω or higher |
CANH (6) - BAT (16) |
HIGH-level CAN bus line |
Ignition switch off* |
6 kΩ or higher |
CANL (14) - BAT (16) |
LOW-level CAN bus line |
Ignition switch off* |
6 kΩ or higher |
NOTICE:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch or any other switches or the doors.
(b) If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.
HINT:
Connect the Techstream cable to the DLC3, turn the ignition switch on (IG) and attempt to use the Techstream. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the Techstream.
3. DIAGNOSIS SYSTEM
(a) Warning light
(1) When there is a problem with the tire pressure warning system, the tire pressure warning light blinks at 0.5 second intervals and comes on after 1 minute.
NOTICE:
When the malfunction has been corrected, the tire pressure warning light does not come on.
(b) DTCs (Normal mode)
(1) DTCs are memorized in the tire pressure warning ECU and read by the blinks
of the tire pressure warning light or by using the Techstream (See page
).
(c) Test mode
(1) By switching from normal mode into test mode (input signal check), you can
inspect the tire pressure warning antenna and receiver, each tire pressure warning
valve and transmitter, engine speed signal and vehicle speed sensor (See page
).
4. CHECK TIRE PRESSURE WARNING LIGHT
(a) Turn the ignition switch to ON.
(b) Check that the tire pressure warning light comes on for 3 seconds.
If the warning check result is not normal, proceed to the troubleshooting for
the tire pressure warning light circuit (See page
).
5. TIRE PRESSURE WARNING LIGHT CHART
HINT:
The table below indicates the tire pressure warning system status according to the tire pressure warning light after the ignition switch is turned to ON.
System Status |
Immediately after turning the ignition switch to ON |
Always |
|||||
---|---|---|---|---|---|---|---|
Warning light output pattern |
|||||||
Comes on for 3 sec. |
Goes off |
Comes on |
Blinks for 1 minute and then illuminates*1 |
Blinks*2 |
Blinks*3 |
Outputs DTC |
|
Normal |
○ |
○ |
- |
- |
- |
- |
- |
Low tire pressure |
○ |
- |
○ |
- |
- |
- |
- |
System fail |
○ |
- |
- |
○ |
- |
- |
- |
Test mode |
○ |
- |
- |
- |
○ |
- |
- |
ECU connector poorly connected |
- |
- |
- |
○*4 |
- |
- |
- |
TC ground (DTC is output) |
○ |
- |
- |
- |
- |
- |
○ |
TC ground (DTC is not output) |
○ |
- |
- |
- |
- |
○ |
- |
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY
(a) Disconnect the T10 and T11 position control ECU and switch assembly connectors.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
HINT:
Measure t ...
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DESCRIPTION
If a door glass or a power window regulator motor assembly does not operate smoothly,
the jam protection function may be triggered automatically, resulting in the auto
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HINT:
This symptom ma ...
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 ...