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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 ((Totally Integrated Power Module (TIPM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P0691-Cooling Fan 1 Control Circuit Low - 3.6L >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

The pulse-width modulated (PWM) fan receives a duty cycle signal from the Totally Integrated Power Module (TIPM) on the (K175) Rad Fan High Speed Control circuit. The Low Speed Cooling Fan Relay is not used to control any components and has no external function. The TIPM connects to the Low Speed Cooling Fan Relay through an internal connection and may set a DTC if the Low Speed Cooling Fan Relay is removed or damaged.

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