DESCRIPTION
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
U0100 |
There is no communication from the ECM. |
|
HINT:
For vehicles with a smart key system only.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
PROCEDURE
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 branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
|
2. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM MAIN WIRE) |
(a) Disconnect the F50 ECM connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F50-34 (CANP) - F50-33 (CANN) |
Ignition switch off |
108 to 132 Ω |
*a |
Rear view of wire harness connector (to ECM) |
NG | ![]() |
REPAIR OR REPLACE ECM MAIN WIRE OR CONNECTOR (CANP, CANN) |
|
3. |
CHECK HARNESS AND CONNECTOR (ECM - BATTERY AND BODY GROUND) |
(a) Connect the cable to the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
*a |
Front view of wire harness connector (to ECM) |
- |
- |
(b) Disconnect the B38, B39 and F51 ECM connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
B38-12 (E1) - Body ground |
Always |
Below 1 Ω |
B39-14 (E01) - Body ground |
Always |
Below 1 Ω |
B39-15 (E02) - Body ground |
Always |
Below 1 Ω |
B39-10 (ME01) - Body ground |
Always |
Below 1 Ω |
F51-12 (EC) - Body ground |
Always |
Below 1 Ω |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F51-24 (BATT) - Body ground |
Always |
11 to 14 V |
F51-23 (+B2) - Body ground |
Battery positive (+) voltage applied to terminal F51-9 (MREL) |
11 to 14 V |
F51-22 (+B) - Body ground |
Battery positive (+) voltage applied to terminal F51-9 (MREL) |
11 to 14 V |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Removal
REMOVAL
PROCEDURE
1. REMOVE NO. 1 INSTRUMENT CLUSTER FINISH PANEL GARNISH
2. REMOVE NO. 2 INSTRUMENT CLUSTER FINISH PANEL GARNISH
3. REMOVE FRONT NO. 1 CONSOLE BOX INSERT
4. REMOVE FRONT NO. 2 CONSOLE BOX INSERT
5. REMOVE SHIFT LEVER KNOB SUB ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
CAUTION:
Wear protective gloves. Sharp areas on the parts may injure your hands.
HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE
1. REMOVE F ...