Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Hybrid Battery Unit, Telephone/Telematics Control Module, Data Bus On Board Diagnostic Interface, Control Module For Emergency Call Module And Communication Unit, Telematics Interface Control Module
AX1
Hybrid Battery Unit
J526
Telephone/Telematics Control Module
J533
Data Bus on Board Diagnostic Interface
J949
Control Module for Emergency Call Module and Communication Unit
J1221
Telematics Interface Control Module
T14z
14-Pin Connector, Black
T20b
20-Pin Connector, Black
T20m
20-Pin Connector, Black
T20n
20-Pin Connector, Brown
T54b
54-Pin Connector, Gray
TAHV
Coupling Point on High-Voltage Battery
P22
CAN Bus High-Voltage Battery High Connection (in Main Wiring Harness)
P23
CAN Bus High-Voltage Battery Low Connection (in Main Wiring Harness)
*
For Vehicles with Emergency Call Module
*2
Refer to Applicable Wiring Diagram
*3
For Vehicles with Hybrid Drive
*4
For Vehicles with China Equipment
*5
Refer to Applicable High-Voltage System Wiring Diagram
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.