Mazda 6 Service Manual: Dtc 21

Dtc 19

Dtc 22

Other materials:

Mazda 6 Service Manual: Inspection of dtcs for condition detection mode
Note The cruise set indicator light will illuminate for 3 seconds, when condition detection mode is on. If the RESUME/ACCEL switch on the cruise control switch is malfunctioning, the cruise set indicator light will not give a correct indication when you inspect the system. 1. Drive ...

Mazda 6 Service Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.) 2. Remove the heater core from the A/C unit. 3. Inspect for cracks, damage, and coolant leakage. If any problems are found, replace the heater core. 4. Inspect for bent fins. If any are bent, use a flathead screwdriver to stra ...