🚚 Kenworth Climate Control Repair – Dial & Output Faults (F21-1015) ECU A failing or failed TCM

A failing or failed TCM can also cause a Check Engine Light to illuminate

HCC D267-C35LA02

loss of the gear shift indicator

Diagnosis of wiring and circuit faults

no coms or output drive issues

🚚 Kenworth Climate Control Repair – Dial & Output Faults (F21-1015) ECU A failing or failed TCMThis is a repair service for the Kenworth F21 1015 climate control module, commonly used in heavy duty Kenworth trucks. These units often suffer from non functional dials or failed output circuits, which affect the control of fans, temperature, and air distribution. Common Issues We Repair: Dials or knobs not responding or functioning intermittently Fan speed or temperature cannot be adjusted Failed output to actuators, relays, or fans Burnt