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Hyundai Azera: Relay Box (Passenger Compartment) Description and Operation - Fuses And Relays - Body Electrical System - Hyundai Azera 2011-2026 Service ManualHyundai Azera: Relay Box (Passenger Compartment) Description and Operation

Fifth generation HG (2011–2026) / Hyundai Azera 2011-2026 Service Manual / Body Electrical System / Fuses And Relays / Relay Box (Passenger Compartment) Description and Operation

Description
Auto cut system of dark current

1.
Description : It cuts automatically power to the load to reduce parastic current draw.

2.
IPM had 3 modes, "Normal Mode", "Sleep Mode", "Power Off Mode". Auto cut of dark current practice in "Sleep Mode".
A.
"Sleep" condition : IG OFF, constant input switch, CAN network doesn't activate.
B.
"Sleep" resolutive condition : Any switch inputs, CAN network activates, KEY ON, IGN ON
C.
"Power OFF" condition : The setting time of timer which is used by cutting a load power expires.
D.
"Normal Mode" : IPM function normally activates.
E.
"Sleep Mode" : It is low power mode and activates for reducing electricity consumption of IPM. Auto cut of dark current function activates.
F.
"Power OFF Mode" : Power of MCU and circumferential circuit is cut for minimizing electricity consumption. Operation stops.
3.
The explanation - The auto cut of dark current

Before delivering to customer
Fuse switch OFF
•All door close & RKE door lock or Constant switch state
(Auto cut of dark current scenario starts.)
 -After "sleep" state is for 20 min.
 -IPM power down(IPM dark current : 200 ?A) and cutting power of Lamp/Body Load/Wake up

After delivering to customer
Fuse switch ON
•All door close & Constant switch state : C_BAState=OFF
(Auto cut of dark current scenario starts.)
 -After "sleep" state is for 20 min.
 -IPM power down(IPM dark current : 200 ?A) and cutting power of Lamp Load
•In case RKE door lock : C_BAState=ON & Trunk SW=CLOSE
(Auto cut of dark current scenario starts.)
 -After "Sleep" state 35s~65s (Waiting time of other unit : 30~60s + SJB sleep counts 5s)
 -IPM Powerdown(IPM dark current : 200 ?A) and cutting power of Lamp Load 


4.
Problem when fuse switch setting is wrong
: If a fuse switch is set to OFF(Before delivering to customer) by a customer or technician and auto cut function of dark current activates, below problems may happen.
Symptom
Related part
• Door lock/unlock, trunk open don't activate by RKE.
(Wakeup of each module don't activate.)
IPM
• Digital clock is reset.(Memory is reset.)
Digital clock
• Setting value of audio(Volume, Frequency setting) is reset.
(Memory is reset.)
Audio

*If mode switch OFF(before delivering to customer) is set, power of BCM, Digital clock and audio is shut off.
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