DESCRIPTION
This DTC is detected if communication is lost with the skid control ECU (brake actuator assembly).
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
U0122 |
Lost Communication with Vehicle Dynamics Control Module |
|
CAN communication system |
CAUTION / NOTICE / HINT
HINT:
When the data in the skid control ECU (brake actuator assembly) is being overwritten, a message is displayed on the multi-information display and the 4LO indicator light rapidly blinks due to the 4 wheel drive control ECU detecting a communication malfunction (blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)), but this is not a malfunction.
for 2WD:
When the data in the skid control ECU (brake actuator assembly) is being overwritten, the rear differential lock indicator light may rapidly blink due to the 4 wheel drive control ECU detecting a communication malfunction (blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)), but this is not a malfunction.
PROCEDURE
1. |
PERFORM DTC |
(a) Clear the DTCs (See page ).
(b) Check if the same DTCs are output (See page
).
Result |
Proceed to |
---|---|
DTC is output |
A |
DTC is not output |
B |
A | ![]() |
CHECK CAN COMMUNICATION SYSTEM |
B | ![]() |
USE SIMULATION METHOD TO CHECK |
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down, or
that the shift point is too high or too low, conduct the following road test referring
to t ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Rear View Monitor System
DTC Code
Detection Item
See page
C1622
Open or Short Circuit in Back Camera Signal
...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FLUID LEVEL IN RESERVOIR
(a) Check the fluid level.
If the brake fluid level is lower than the MIN line, check for leaks and inspect
the disc brake pads. If necessary, refill the reservoir with brake fluid to the
MAX line after repair or replaceme ...