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.

2008 Jeep Commander Overland, RWDFACTORY OEM SERVICE PROCEDURE

A/C Heater Control (Manual Temperature Control) Connector End View (C3)

CONTROL-A/C-HEATER C3 - 10-WAY(MTC)

Courtesy of CHRYSLER CORP.
CAV	CIRCUIT	FUNCTION
1	C70 12LB	BLOWER HIGH SPEED
2	C41 18LG	BLOWER SWITCH POSITION SIGNAL
3	C73 12GY/LG	BLOWER M2 SPEED
4	Z134 12BK/LG	GROUND
5	-	-
6	-	-
7	-	-
8	-	-
9	C72 12OR/LG	BLOWER M1 SPEED
10	C71 20RD/LG	BLOWER LOW SPEED

Factory Service Tools

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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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