No. 1 Heated Steering Wheel System Does Not Operate: Notes

NO. 1 HEATED STEERING WHEEL SYSTEM DOES NOT OPERATE (HEATED STEERING WHEEL) DESCRIPTION AND POSSIBLE CAUSES

Troubleshooting item	Heated steering wheel system does not operate
Description	Heated steering wheel does not warm steering wheel even though heated steering wheel switch is on
Possible causes	The power supply is not supplied to filament of heated steering wheel Open circuit in heated steering wheel control unit power supply circuit Open circuit in clock spring power supply circuit IG1 relay No. 2 malfunction Clock spring malfunction Heated steering wheel control unit not operation Open circuit in heated steering wheel control unit ground circuit Open circuit in clock spring ground circuit Clock spring malfunction Heated steering wheel unit cannot control filament on Heated steering wheel unit malfunction Heated steering wheel filament does not generate heat Heated steering wheel unit malfunction Heated steering wheel control unit cannot receive operation signal Open circuit in heated steering wheel control unit control circuit Short to ground in heated steering wheel control unit control circuit Short to power supply in heated steering wheel control unit control circuit Open circuit in clock spring control circuit Short to ground in clock spring control circuit Short to power supply in clock spring control circuit Heated steering wheel control unit malfunction Clock spring malfunction Dash-electrical supply unit malfunction CAN communication line malfunction Steering warmer switch malfunction: Climate control unit malfunction
Courtesy of MAZDA MOTORS CORP.

When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.