7A
Heating performance is poor
Condition Possible Cause Action
Heating performance is poor
Wiring or grounding for additional heater assembly faulty
Repair as necessary.
Additional heater fuses blown
Replace additional heater fuses to check for short.
Additional heater relays faulty
Check additional heater relays.
Additional heater assembly faulty
Check additional heater assembly.
ECM faulty
Check ECM.