How to Troubleshoot the Body Electrical

HDS Inputs and Commands

Input:

System Menu
Data List
Data List Indication
Climate control
A/C Pressure Switch/Thermal Protector
OFF/ON
Rear Defroster Input Switch
OFF/ON
Rear Defroster Output Switch
OFF/ON
Headlight leveling
Front Height Sensor Value
Rear Height Sensor Value
Adjust Sensor Value
Height Sensor Minimum Value
Height Sensor Maximum Value
Passing Input Signal
OFF/ON
Headlight ON Input Signal
OFF/ON
Vehicle Speed Input Signal
OFF/ON
Auto Leveling Warning Command
OFF/ON
Height Sensor Input Signal
OFF/ON
Adjust Output Signal
OFF/ON
Auto Light Leveling Calibration Completion Command


Output:

System Menu
HDS Description
Note
Climate control
Rear defroster RLY
Outputs for 60 seconds
Rear Defogger
Operates a relay of Rear defroster for 60 seconds
Headlight leveling
The reflector is moved one time up and down
The reflector is moved one time up and down
Warning lamp
Warning lamp
Door locks
LOCK all doors
Outputs LOCK signal 1 time (0.6 sec) to all door
UNLOCK all doors
Outputs UNLOCK signal 1 time (0.6 sec) to all door
UNLOCK driver's side door
Outputs UNLOCK signal 1 time (0.6 sec) to driver side door
Keyless
Trunk Lid/Tailgate Release Command
Unlock trunk
Lighting
Interior Light Command
Illuminates for 30 seconds
Hazard flasher (Turn left and right)
Blinks turn signal (left and right) for 15 seconds
LEFT Turn Signal Command
Blinks for 5 seconds
RIGHT Turn Signal Command
Blinks for 5 seconds
Headlight Command
Operates headlight (low) for 15 seconds
Headlight HIGH Beam Command
Operates headlight (high) for 15 seconds
Fog Light
Operates a relay of front fog light for 15 seconds
Courtesy light (DR)
Illuminates for 30 seconds
Small light
Operates small lights for 15 seconds
Courtesy LT RD
Outputs for 30 seconds
Rear Fog Light
Illuminates for 30 seconds
Headlight Backup
Outputs for 15 milliseconds
Headlight Cleaner
Outputs operation 1 time (for 750 milliseconds)
Courtesy light (AS)
Illuminates for 30 seconds
Courtesy LT RA
Outputs for 30 seconds
Headlight Command
Operates for 15 seconds
Headlight HIGH Beam Command
Operates for 15 seconds
Parking Light Command
Operates for 15 seconds
Fog Light
Operates for 15 seconds
Rear Fog Lamp
Illuminates for 30 seconds
Cargo Area Light
Illuminates for 30 seconds
Power windows
Power window RLY Rr
Outputs for 30 seconds
Power window RLY Rr
Outputs for 30 seconds
Driver's Window Up
Drives for 3 seconds
Driver's Window Down
Drives for 3 seconds
Front Passenger's Window Up
Drives for 3 seconds
Front Passenger's Window Down
Drives for 3 seconds
Left Rear Window Up
Drives for 3 seconds
Left Rear Window Down
Drives for 3 seconds
Right Rear Window Up
Drives for 3 seconds
Right Rear Window Down
Drives for 3 seconds
Security
Horn Command
Operates horn for 1 second
Horn Command
Operates horn for 1 second
Wiper
Windshield Wiper Motor LOW Command
Operates windshield wiper for 5 seconds (low speed)
Windshield Wiper Motor HIGH Command
Operates windshield wiper for 5 seconds (high speed)
Windshield Washer Command
Operates windshield washer for 5 seconds
Windshield Wiper Motor LOW Command
Operates windshield wiper for 5 seconds (low speed)
Windshield Wiper Motor HIGH Command
Operates windshield wiper for 5 seconds (high speed)
Windshield Washer Command
Operates windshield washer for 5 seconds
Auto Wiper Test
Outputs intermittent wiper signal (1 time)
Driving position memory system
Power Seat: Slide Motor-Full FORWARD
Power Seat: Slide Motor-Full BACKWARD
Power Seat: Front UP-DOWN Motor-Full UP
Power Seat: Front UP-DOWN Motor-Full DOWN
Power Seat: Rear UP-DOWN Motor-Full UP
Power Seat: Rear UP-DOWN Motor-Full DOWN
Power Seat: Recline Motor-Full FORWARD
Power Seat: Recline Motor-Full BACKWARD
Power Seat: Memory Buzzer-5 seconds

When an ECU is unable to communicate with the other ECUs on the CAN circuit, the other control units will set loss of communication DTCs. Use this chart to find the control unit that is not communicating.
  1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
  1. Do the input test for the transmitting control unit.

BUS OFF and Internal Error Codes

DTC type
Related Unit
Drive's MICU
Passenger's MICU
Gauge control module
Door multiplex control unit
Immobilizer-keyless control unit
Heater control unit/ Climate control unit
Headlight leveling control unit
Automatic lighting/Rain sensor
Power seat control unit
Hands Free Telephone control unit
Parking and back-up sensor control unit
BUS OFF
U1280
U1280
U1280
U1280
U1280
U1280
U1280
U1280
U1280
U1280
U1280
ECU (EEPROM) Error
B10A2
B11A2
B1152
Driver's MICU
TX
U1282
U1282
U1282
U1282
U1282
U1282
U1282
U1282
Passenger's MICU
U1283
TX
U1283
U1283
Gauge control module
U0155
U0155
TX
U0155
U0155
U0155
U0155
U0155
U0155
Door multiplex control unit
U0199
TX
U0199
Heater control unit/ Climate control unit
U0164
TX
TX
ECM/PCM
U0100
SRS unit
U0151
ACC control unit
U0104
VSA modulator-control unit
U0122
EPS control unit
U0131


TX:
Transmitting unit does not set a loss of communication DTC.

NOTE: In order for the driver's MICU to verify the communication with the rain sensor (with automatic wiper), after the battery terminal(s) have been disconnected, connect the rain sensor 6P connector before reconnecting the battery terminal(s) and turn the ignition switch ON (II). Since only the rain sensor is determined equipped or unequipped by the presence of communication, when the connector is disconnected, even the equipped vehicle is determined as unequipped.