Part 1

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU

HINT
Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

NOTICE:
* Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the engine switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
* w/ Navigation System (for HDD):
After the engine switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal:

* When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

2. JUNCTION CONNECTOR

(a) NO. 1 JUNCTION CONNECTOR

(b) NO. 2 JUNCTION CONNECTOR

HINT
*1: w/ Multi-display

*2: w/o Multi-display

(d) NO. 4 JUNCTION CONNECTOR

(e) NO. 5 JUNCTION CONNECTOR

(f) NO. 6 JUNCTION CONNECTOR

(g) NO. 7 JUNCTION CONNECTOR

HINT
*1: w/ Advanced parking guidance system and intuitive parking assist system

*2: w/ Intuitive parking assist system

(h) NO. 8 JUNCTION CONNECTOR

(i) NO. 9 JUNCTION CONNECTOR

(j) NO. 10 JUNCTION CONNECTOR

(k) NO. 11 JUNCTION CONNECTOR

(l) NO. 12 JUNCTION CONNECTOR

(m) NO. 13 JUNCTION CONNECTOR

(n) CAN JUNCTION CONNECTOR

3. TERMINALS OF CONNECTORS FOR JUNCTION CONNECTOR (CAN JUNCTION CONNECTOR)

4. CHECK DLC3

(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

(b) Measure the resistance according to the value(s) in the table below.

5. CHECK SKID CONTROL ECU

(a) Disconnect the A19 and A21 ECU connectors.

(b) Measure the resistance according to the value(s) in the table below.

HINT
*1: for V bus

*2: for Steering bus

*3: for Braking and driving bus

6. CHECK AIR CONDITIONING AMPLIFIER

(a) Disconnect the L76 and L77 amplifier connectors.

(b) Measure the resistance according to the value(s) in the table below.

7. CHECK ECM

(a) Disconnect the A13, A14 and E3 ECM connectors.

(b) Measure the resistance according to the value(s) in the table below.

HINT
*1: for V bus

*2: for Steering bus

*3: for Braking and driving bus

*4: for Powertrain bus

8. CHECK MAIN BODY ECU

(a) Disconnect the L11 ECU connector.

(b) Disconnect the DA and DF ECU connectors.

(c) Measure the resistance according to the value(s) in the table below.

HINT
*1: for V bus

*2: for MS bus

9. CHECK NO. 1 METER ECU

(a) Disconnect the L10 ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

HINT
*1: for V bus

*2: for MS bus

10. CHECK CENTER AIRBAG SENSOR

(a) Disconnect the L73 sensor connector.

(b) Measure the resistance according to the value(s) in the table below.

11. CHECK ELECTRIC POWER CONTROL ECU

(a) Disconnect the A69 ECU connector.

(b) Disconnect the PA and PM ECU connectors.

(c) Measure the resistance according to the value(s) in the table below.

12. CHECK AFS ECU

(a) Disconnect the A37 ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

13. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY

HINT
For vehicles with multi-display only.

(a) Disconnect the L59 display and navigation module display connector.

(b) Measure the resistance according to the value(s) in the table below.

14. CHECK INTEGRATION CONTROL AND PANEL ASSEMBLY

HINT
For vehicles without multi-display only.

(a) Disconnect the L35 panel assembly connector.

(b) Measure the resistance according to the value(s) in the table below.

15. CHECK STEERING ANGLE SENSOR

(a) Disconnect the L21 sensor connector.

(b) Measure the resistance according to the value(s) in the table below.

16. CHECK YAW RATE SENSOR

(a) Disconnect the L71 sensor connector.

(b) Measure the resistance according to the value(s) in the table below.

17. CHECK POWER STEERING ECU

(a) Disconnect the A44 ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

HINT
*1: for Steering bus

*2: for Braking and driving bus

18. CHECK STEERING CONTROL ECU

HINT
For vehicles with variable gear ratio steering system only.

(a) Disconnect the A41 and A42 ECU connectors.

(b) Measure the resistance according to the value(s) in the table below.

HINT
*1: for Steering bus

*2: for Braking and driving bus

19. CHECK SUSPENSION CONTROL ECU

HINT
For vehicles with air suspension system only.

(a) Disconnect the L88 and R1 ECU connectors.

(b) Measure the resistance according to the value(s) in the table below.

HINT
*1: for Steering bus

*2: for Braking and driving bus