WCS(Weight Classification System) ECU checks input voltage when "IG ON" to make WCS system work properly.
If input voltage is out of normal range, there can be malfunction in system operation. In this case, Check battery and charging system.
WCS send each passenger seat status(empty, child, adult) to ACU.if B149000 is detected at ACU, should be checked Diagnostic Codes at WCS.
The WCS ECU sets DTC B110200 and turns warning light on if voltage below threshold value is detected.
Item
Detecting Condition
Possible cause
DTC Strategy
Check voltage
Poor connection of connected part.
Open/Short circuit in power harness.
Open/Short circuit in ground harness.
Faulty charging system.
Enable Conditions
Ignition "ON"
Threshold Value
Vbatt = 6.3V
Diagnostic
Time
Qualification
More than 5000ms
De-Qualification
More than 2000ms
Test Condition
Voltage
Idle & WOT
Approx. 6.3 = Vbatt = 18.7