Mazda CX-5 Service & Repair Manual: Heater Core
Purpose
-
The heater core heats passing air.
Function
-
A portion of the engine coolant is taken into the heater core to heat the air passing through the heater core.
Construction
-
The heater core consists of a tube which passes engine coolant, and the heat radiation fin.
Operation
-
The engine coolant warmed by the engine heat is sent to the heater core.
-
The air blown by the blower motor is warmed up by heat exchange when it passes through the heat radiation fin of the heater core.
Fail-safe
-
Function not equipped.
Heated Oxygen Sensor (HO2 S) Heater Control [Skyactiv G 2.0]
Outline
Based on the control of the HO2S heater, a stabilized oxygen concentration
is detected even at low exhaust temperatures, and feedback control of fuel injection
even at cold engine ...
Heater Core Inspection
1. Inspect the heater core for damage, cracks, and water leakage.
If there is any malfunction, replace the heater core.
2. Visually inspect the fins for bending.
If there is any ...
Other materials:
Map Light Inspection
Front Map Light
1. Disconnect the negative battery cable..
2. Remove the front map light..
3. Verify that the continuity between the front map light terminals is as indicated
in the table.
If not as indicated in the table, replace the front map light or front map
light bulb ...
Fuel Injector Inspection
Resistance Inspection
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Disconnect the fuel injector connector.
4. Inspect the resistance between fuel injector terminals A and B.
Fuel injector resistance
1.74—2.04 ohms [20 °C {68 °F}]
...
Seat Warmer Control Unit Inspection
WARNING:
Handling a front seat (with built-in side air bag) improperly can accidentally
operate (deploy) the air bag, which may seriously injure you. Read the service
warnings/cautions before handling a front seat (with built-in side air bag)..
CAUTION:
After removing a f ...
