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) |
○ |
- |
- |
- |
- |
○ |
- |
Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2) (P0037,P0038,P0141,P102D)
DESCRIPTION
Refer to DTC P0136 (See page ).
HINT:
When any of these DTCs are stored, the ECM enters fail-safe mode. The
ECM turns off the heated oxygen sensor heater in fail-safe mode. Fail-safe
mode continues until the ignition switch is t ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Lighting system data and the Diagnostic Trouble Codes (DTCs) can be read
from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be
malfunctioning, use the Techstream to check for malfunctions an ...
Voice Guidance does not Function
PROCEDURE
1.
CHECK VOICE GUIDANCE
(a) Check that the voice guidance settings are not off.
OK:
Voice guidance settings are not off.
NG
CHANGE THE VOICE GUIDANCE SETTINGS TO ON
...