DIAGNOSIS SYSTEM
Troubleshooting
| CHECK DLC3 |
  |
The seat belt control ECU uses CAN and ISO 15765-4 communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
Symbols (Terminals 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
10 to 14 V
CANH (6) - CANL
HIGH - level CAN bus line
Engine switch off
54 to 67 Ω
CANH (6) - Battery positive
HIGH - level CAN bus line
Engine switch off
1 MΩ or higher
CANH (6) - CG (4)
HIGH - level CAN bus line
Engine switch off
3 MΩ or higher
CANL (14) - Battery positive
LOW - level CAN bus line
Engine switch off
1 MΩ or higher
CANL (14) - CG (4)
LOW - level CAN bus line
Engine switch off
3 MΩ or higher
- HINT:
- Connect the cable of the intelligent tester to the DLC3, turn the engine switch on (IG) and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.
- If the tester is able to communicate when it is connected to another vehicle, inspect the DLC3 of the original vehicle.
- If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the tester's instruction manual for information on service or repair of the tester.
- If the tester is able to communicate when it is connected to another vehicle, inspect the DLC3 of the original vehicle.
| FUNCTION OF WARNING INDICATOR AND MESSAGE |
If the pre-crash safety is not functioning properly, the driver is warned by the master warning indicator and multi-information display warning message on the combination meter.
Master Warning Indicator
Warning Message
Detail
DTC
PCS Warning indicator
ON
CHECK PCS SYSTEM
This message appears when the seat belt control ECU detects a system malfunction
○
ON
Illuminate
PCS NOT AVAILABLE NOW
This message appears when the seat belt control ECU is in the fail-safe mode (Click here)
-
Blinking
Initial check.
The initial check occurs when the engine switch is off for more than 2 seconds, and then turned on (IG). The initial check consists of a pre-crash safety diagnostic check with a duration of approximately 3 seconds.
If a malfunction is detected during the initial check, the multi-information display will output "CHECK PCS SYSTEM " or "PCS NOT AVAILABLE NOW".
Constant check.
The seat belt control ECU and distance control ECU constantly monitor the pre-crash safety for malfunctions after the initial check approximately 3 seconds after turning the engine switch on (IG).
"CHECK PCS SYSTEM" or "PCS NOT AVAILABLE NOW" is displayed on the multi-information display in the combination meter assembly when the constant check detects malfunctions in the pre-crash safety.