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How to Troubleshoot the Body Electrical

Troubleshoot the B-CAN Circuit Related Problems
How to check for DTCs with the HDS (preferred method)
The HDS can check the F-CAN and B-CAN communication status, read and clear the DTCs, display the data list, and perform function test.
Check for DTCs
  1. Connect the HDS to the data link connector (A) located under the driver's side of the dashboard.
  1. Turn the ignition switch to ON (II).
  1. Make sure the HDS communicates with vehicle.
    NOTE: If the HDS does not communicate with the vehicle, troubleshoot the DLC circuit.
  1. Select the BODY ELECTRICAL, then select the desired TEST MODE menu, and check the DTCs. If the DTCs do not pertain to the select menu, select the All DTC Check icon to view all Body DTCs.
    NOTE: For specific operations, refer to the HDS user's manual.
  1. If any DTCs are indicated, go to the indicated DTCs troubleshooting.
    NOTE: If the DTC B1000, B1150, B1178, B1200, B1750, B1900, B2350, and/or B2450 are stored, troubleshoot these DTCs first (beginning with the lowest number).

How to check for DTCs without the HDS (Use only if the HDS is unavailable)
Special Tools Required

MPCS short connector
 07WAZ-0010100
If the HDS is unavailable, using the following method, you can check the B-CAN communication status, DTCs, and some F-CAN communication status related with the gauge control module.

Check for DTCs

  1. Turn the ignition switch to ON (II).
  1. Connect the MPCS short connector (A) to the MICU service check connector (B), and turn the switch (C) ON.

  1. After 5 to 10 seconds, the DTCs which have been detected and stored individually by various B-CAN unit, will be indicated one by one on the multi-information display or the odo/trip display if the communication line between the MICU and the gauge control module is OK. To scroll through the DTCs, press the select/reset button.
The unit that has stored the code can be identified by the number shown on the odo/trip display.
Control Unit
Control Unit I.D. Number
MICU
10
Gauge control module
50
Climate control unit
51
Automatic lighting/rain sensor
71
Headlight leveling control unit
75
Hands Free Telephone control unit
94
Immobilizer-keyless control unit
96

NOTE: Also you can check the B-CAN communication status by following methods:

How to Clear the DTCs with the HDS
  1. Connect the HDS to the data link connector (A) located under the driver's side of the dashboard.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0), and disconnect the HDS from the data link connector (DLC).

How to Clear the DTCs without the HDS
  1. While in DTCs indication status, press and hold the SELECT/RESET switch for more than 10 seconds.
  1. Turn the MPCS short connector switch off, and disconnect the connector from the MICU service check connector.
  1. Turn the ignition switch to LOCK (0).

HDS Inputs and Commands
Certain inputs happen so quickly that the HDS cannot update fast enough. Hold the switch that is being tested while monitoring the Data List. This should give the HDS time to update the signal on the Data List.
Because the HDS software is updated to support the release for newer vehicles it is not uncommon to see system function tests that are not supported.
Make sure that the most current software is loaded.

Input

System Menu
Data List
Data List Indication
Lighting
Driver's Door Switch
OFF/ON
Hazard Switch
OFF/ON
Headlight Switch (OFF)
OFF/ON
Headlight Switch (PARKING)
OFF/ON
Headlight Switch (HEADLIGHT)
OFF/ON
Headlight Switch (AUTO)
OFF/ON
Headlight Switch (High Beam)
OFF/ON
Headlight Switch (PASSING)
OFF/ON
Turn Signal Switch (LEFT)
OFF/ON
Turn Signal Switch (RIGHT)
OFF/ON
Fog Light Switch
OFF/ON
Autolight Sensor input voltage
V
Autolight Sensor Malfunction Detection voltage Max
V
Autolight Sensor Malfunction Detection voltage Min
V
Interior Light Command
OFF/ON
Left Turn Signal Command
OFF/ON
Right Turn Signal Command
OFF/ON
Cargo Light Command
OFF/ON
Autolight Small command
OFF/ON
Autolight Headlight command
OFF/ON
Autolight Warning command
OFF/ON
Autolight Headlight Back-up line command
OFF/ON
Headlight Command
OFF/ON
Headlight High Beam Command
OFF/ON
Parking Light Command
OFF/ON
Fog Light Command
OFF/ON
RLS Autolight Forward sensor
V
RLS Autolight Ambient sensor
V


HDS Inputs and Commands

Input

System Menu
Data List
Data List Indication
Gauges
Cruise Control Main Switch (ACC switch)
OFF/ON
Cruise Control Set Switch
OFF/ON
Cruise Control Resume Switch
OFF/ON
VSA/TCS Off Switch
OFF/ON
Gauge Select/Reset Switch
OFF/ON
Parking Brake Switch
OFF/ON
Brake Fluid Level Switch
OFF/ON
Fuel Sending Unit Input 1
———
Fuel Sending Unit Input 2
v
VSA/TCS Active Indicator
OFF/ON
VSA/TCS Indicator (Warning)
OFF/ON
ABS Indicator
OFF/ON
EBD Indicator (Electronic Brake Distribution)
OFF/ON
Cruise Control Main Switch Indicator
OFF/ON
MIL Indicator
OFF/ON
Low Oil Pressure Indicator
OFF/ON
Charging System Indicator
OFF/ON
High Beam Indicator
OFF/ON
Parking Light ON Indicator
OFF/ON
Low Fuel Warning Indicator
OFF/ON
Security Indicator
OFF/ON
Fog Light Indicator
OFF/ON
Auto-light Indicator
OFF/ON
Seat Belt Indicator
OFF/ON
Speed Indicator (km/h) Command
km/h
Speed Indicator (mph) Command
MPH
Driver's Seat Belt Buckle Switch
OFF/ON
A/T Gear Position Switch (R)
OFF/ON
A/T Gear Position Switch (P)
OFF/ON


Input

System Menu
Data List
Data List Indication
Door Locks
Driver's Door Switch
OFF/ON
Front Passenger's Door Switch
OFF/ON
Driver's Rear Door Switch
OFF/ON
Passenger's Rear Door Switch
OFF/ON
Front Passenger's Door Lock Knob Switch (UNLOCK)
OFF/ON
Driver's Rear Door Lock Knob Switch (UNLOCK)
OFF/ON
Passenger's Rear Door Lock Knob Switch (UNLOCK)
OFF/ON
Driver's Door Key Cylinder Switch (LOCK)
OFF/ON
Driver's Door Key Cylinder Switch (UNLOCK)
OFF/ON
Driver's Door Lock Switch (LOCK)
OFF/ON
Driver's Door Lock Switch (UNLOCK)
OFF/ON
Driver's Door Lock Knob Switch (LOCK)
OFF/ON
Driver's Door Lock Knob Switch (UNLOCK)
OFF/ON
Door LOCK Command
OFF/ON
Door UNLOCK Command
OFF/ON
Wiper
Brake Pedal Position Switch
OFF/ON
Windshield Wiper Switch (LOW)
OFF/ON
Windshield Wiper Switch (HIGH)
OFF/ON
Windshield Wiper Switch (MIST)
OFF/ON
Windshield Wiper Switch (INT)
OFF/ON
Windshield Washer Switch
OFF/ON
Rear Washer Switch
OFF/ON
Rear Wiper Switch
ON/OFF
Windshield Wiper Motor PARK Switch
OFF/ON
Rear Wiper Command
ON/OFF
Rear Washer Command
ON/OFF
Windshield Wiper Motor HI Command
OFF/ON
Windshield Wiper Motor LO Command
OFF/ON
Windshield Washer Motor Command
OFF/ON
Rear Wiper Auto Stop Switch
OFF/ON
RLS Glass Attachment
Normal/Check/Fail
RLS Rain sensing (rain intensity)
NONE/DETECT


HDS Inputs and Commands

Input

System Menu
Data List
Data List Indication
Keyless
Driver's Door Switch
OFF/ON
Front Passenger's Door Switch
OFF/ON
Driver's Rear Door Switch
OFF/ON
Passenger's Rear Door Switch
OFF/ON
Trunk Lid/Tailgate Switch
OFF/ON
Front Passenger's Door Lock Knob Switch (UNLOCK)
OFF/ON
Driver's Rear Door Lock Knob Switch (UNLOCK)
OFF/ON
Passenger's Rear Door Lock Knob Switch (UNLOCK)
OFF/ON
Trunk Knob Sw. (UNLOCK)
OFF/ON
Driver's Door Key Cylinder Switch (LOCK)
OFF/ON
Driver's Door Key Cylinder Switch (UNLOCK)
OFF/ON
Driver's Door Lock Switch (LOCK)
OFF/ON
Driver's Door Lock Switch (UNLOCK)
OFF/ON
Driver's Door Lock Knob Switch (LOCK)
OFF/ON
Driver's Door Lock Knob Switch (UNLOCK)
OFF/ON
Door LOCK Command
OFF/ON
Door UNLOCK Command
OFF/ON


Input

System Menu
Data List
Data List Indication
Security
Ignition Key Cylinder Switch
OFF/ON
Driver's Door Switch
OFF/ON
Front Passenger's Door Switch
OFF/ON
Driver's Rear Door Switch
OFF/ON
Passenger's Rear Door Switch
OFF/ON
Trunk Lid/Tailgate Switch
OFF/ON
Front Passenger's Door Lock Knob Switch (UNLOCK)
OFF/ON
Driver's Rear Door Lock Knob Switch (UNLOCK)
OFF/ON
Passenger's Rear Door Lock Knob Switch (UNLOCK)
OFF/ON
Hazard Switch
OFF/ON
Hood Switch
OFF/ON
Driver's Door Key Cylinder Switch (LOCK)
OFF/ON
Driver's Door Key Cylinder Switch (UNLOCK)
OFF/ON
Driver's Door Lock Switch (LOCK)
OFF/ON
Driver's Door Lock Switch (UNLOCK)
OFF/ON
Driver's Door Lock Knob Switch (LOCK)
OFF/ON
Driver's Door Lock Knob Switch (UNLOCK)
OFF/ON
Door LOCK Command
OFF/ON
Door UNLOCK Command
OFF/ON
Headlight Command
OFF/ON
Headlight High Beam Command
OFF/ON
Parking Light Command
OFF/ON
Horn Command
ON/OFF
HVAC/Climate Control
A/C Pressure Switch/Thermal Protector
OFF/ON


Output

System Menu
HDS Description
Note
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
Lighting
Interior Light Command
Illuminates for 30 seconds
Hazard flasher
Blinks turn signal (left and right) for 5 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
Parking Light Command
Operates small lights for 15 seconds
Rear Fog Light
Operates a relay of rear fog light for 30 seconds
Cargo Area Light
Illuminates for 30 seconds
Security
Horn Command
Operates horn for 1 second
Wipers/washers
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
Rear window washer motor command
Operates for 5 seconds
Rear Wiper motor
Operates for 5 seconds
Front Wiper-LOW
Operates windshield wiper via RLS unit (low speed)
Front Wiper-HIGH
Operates windshield wiper via RLS unit (high speed)
Front Wiper-INT
Operates windshield wiper via RLS unit (intermittently)
Rear Wiper
Operates rear wiper once


Loss of Communication DTC cross-reference chart
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. Perform the input test for the transmitting control unit.

Bus Off and Internal Error Codes

DTC type
Related Unit
MICU
Gauge Control Module
Climate Control Unit
Immobilizer-Keyless Control Unit
Automatic Lighting/ Rain Sensor
Hands Free Telephone Control Unit
Headlight Auto Leveling Control Unit
BUS OFF
B1000
B1150
B1200
B1900
B2350
B1750
B2450
ECU (EEPROM) Error
B1002
B1152
B2352
B2479

Transmitting Control Unit
Message
Receiving Unit/Loss of Communication DTC
MICU
Gauge Control Module
Climate Control Unit
Immobilizer-Keyless Control Unit
Automatic Lighting Rain Sensor
Hands Free Telephone Control Unit
Headlight Auto Leveling Control Unit
MICU
RM
B1188
B2357
HLSW
B1155
B2355
B2456
WIPSW
B1156
B2969
B2356
MICU
B1157
DOORSW
B1159
DRLOCKSW
B1160
B1905
Gauge Control Module
VSP/NE
B1011
B1205
B2455
A/T
B1906
ENGTEMP
B1206
ILLUMI
B1207
Automatic Lighting/Rain Sensor
AUTO LT
PCM
ENG
B1168
A/T
B1169
VSA Modulator-Control Unit
VSA
B1170
EPS Control Unit
EPS
B1183
SRS
SRS
B1187