7A
Incorrect temperature output
For M13 Engine Model
Condition Possible Cause Action
Incorrect temperature output
Control cables broken or binding
Check cables.
Temperature control lever faulty
Check control lever.
Control cable clamp position is faulty
Check and adjustment.
Air damper broken
Repair damper.
Air ducts clogged
Repair air ducts.
Heater radiator leaking or clogged
Replace radiator.
Heater hoses leaking or clogged
Replace heater hoses.