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.
System Description: Notes
Power is supplied at all times
- to ignition relay, located in the IPDM E/R (intelligent power distribution module engine room), and
- through 50A fusible link (letter f , located in the fuse and fusible link box)
- to BCM (body control module) terminal 70, and
- to 15A fuse (No. 60, located in the fuse and relay box)
- through 15A fuse (No. 60, located in the fuse and relay box)
- to trailer turn relay LH and RH terminal 5, and
- through 10A fuse (No. 32, located in the IPDM E/R)
- through IPDM E/R terminal 61
- to trailer tow relay 1 terminal 3, and
- through 20A fuse (No. 53, located in the IPDM E/R)
- to CPU (central processing unit) of the IPDM E/R, and
- to tail lamp relay, located in the IPDM E/R, and
- through 30A fusible link (letter j , located in the fuse and fusible link box)
- to trailer tow relay 2 terminals 3 and 6, and
- through 40A fusible link (letter k , located in the fuse and fusible link box)
- to electric brake (pre-wiring) terminal 5.
With the ignition switch in the ON or START position, power is supplied
- to ignition relay, located in the IPDM E/R, and
- through 10A fuse (No. 59, located in the fuse and relay box)
- to BCM terminal 38, and
- through 10A fuse (No. 51, located in the IPDM E/R)
- to trailer tow relay 2 terminal 1.
Ground is supplied
- to BCM terminal 67
- to electric brake (pre-wiring) terminal 1 and
- to trailer tow relay 1 terminal 2
- through grounds M57, M61 and M79, and
- to IPDM E/R terminals 38 and 59
- to trailer tow relay 2 terminal 2
- to trailer connector terminal 2
- to trailer turn relay LH and RH terminal 2
- through grounds E9, E15 and E24.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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