Hyundai Genesis (DH): Power Trunk Module / Power Trunk Open/Close Switch Troubleshooting

Hyundai Genesis (DH) 2013-2016 Service Manual / Body Electrical System / Power Trunk Module / Power Trunk Open/Close Switch Troubleshooting

Troubleshooting
Diagnosis And Testing - Power Trunk Lid System
The power trunk lid system is a complex system containing many components. In order to perform accurate testing, or receive outputs the power trunk lid control module must be checked.
The most reliable, efficient, and accurate means to diagnose the power trunk lid system requires the use of a scan tool and the proper Body Diagnostic Procedures manual. The scan tool can be used to observe current switch status recorded in the power trunk lid control module to help the technician diagnose an inoperative switch.
Before any testing of the power trunk lid system is attempted, the battery shall be fully charged, and the module shall recognize all limiting conditions of the system (Refer to power trunk lid system description for list).
Following is a diagnostic table for quick reference to help when diagnosing and testing the power trunk lid system.
NO
Item
Specification description
Output
Form
1
A_VBAT
Bat Voltage on PTM
Voltage(V)
2
Hall SNSR power voltage
Hall sensor voltage PTM input
3
LED ON/OFF
Vbatt Power (between 9.0v and 16v)
ON/OFF
4
Trunk Lid Latch SW
Trunk main Switch
5
P_Striker_SW
Trunk Lid outside Handle switch
6
Trunk_Trim_Close SW
Trunk Inner Push Button
7
Trunk_INR_Push Button
Trunk Trim Close
8
Trunk Lid O/S HDL SW
Power Striker Switch
9
Trunk main SW
Trunk Lid Latch Switch
10
Vbatt Power Voltage in Range
LED On/Off
11
Drive Motor Operating Voltage
Drive motor Open/Close voltage
PTM output
Voltage(V)
12
Power Striker Operating Voltage
Power Striker motor Pop-up/Close
Voltage PTM output
13
Trunk Lid Position
Current Trunk position in counter
%
14
Unknown Trunk Lid Position Flag
Learn ProcessComplete Status
ON/OFF
15
Learn Process Complete Status
Unknown Trunk Lid Position Flag
ON/OFF
16
Most recent close time (P/Strikeer)
Most recent close time
ms
17
2ND Most recent close Time
(P/Strikeer)
2ND Most recent close time

DTC Diagnosis
NO
DTC Code
DTC Diagnosis details
1
number Of DTC
Number of trouble code
2
CAN ERR
CAN Communication error
3
CAN BUSOFF
CAN LINE error
4
ECU
RAM, Flash Memory, EEPROM

    Inspection 1. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") 2. Check for continuity between terminals (A) of the power trunk switch.

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