Warning
Power Brake Unit Function Check (Simple Method)
Step 1
1. With the engine stopped, depress the pedal a few times.
2. With the pedal depressed, start the engine.
3. If the pedal moves down slightly immediately after the engine starts, the unit is operating.
Step 2
1. Start the engine.
2. Stop the engine after it has run for 1 or 2 minutes.
3. Depress the pedal with the usual force.
4. If the first pedal stroke is long and becomes shorter with subsequent strokes, the unit is operating.
Step 3
1. Start the engine.
2. Depress the pedal with usual force.
3. If the pedal height does not change, the unit is operating.
4. Hold the pedal down for about 30 seconds.
5. If the pedal height does not change, the unit is operating.
Power Brake Unit Function Check (Inspection Using The Testers)
Connect the SSTs
, vacuum gauge, and pedal depression force gauge as shown in the figure to bleed the air from SSTs
and brake line. (Bleed the air from SSTs
using a air bleed valve A.)
Checking for vacuum loss (unloaded condition)
1. Stop the engine when the vacuum gauge reading reaches 66.7 kPa {500 mmHg, 19.7 inHg}.
2. Observe the vacuum gauge for 15 seconds.
, the unit is operating.
Checking for vacuum loss (loaded condition)
1. Start the engine.
2. Depress the brake pedal with a force of 196 N {20 kgf, 44 lbf}.
3. Stop the engine when the vacuum gauge reading reaches 66.7 kPa {500 mmHg, 19.7 inHg}.
4. Observe the vacuum gauge for 15 seconds.
5. If the gauge shows 63.3-66.7 kPa {475-500 mmHg, 18.7-19.6 inHg},
the unit is operating.
Checking for hydraulic pressure
1. When the engine is stopped (vacuum 0 kPa {0 mmHg, 0 inHg}
) and the fluid pressure is within the specification, the unit is operating.
2. Start the engine. Depress the brake pedal when the vacuum reaches 66.7 kPa {500 mmHg, 19.7 inHg}.
Mazda 6 Service Manual: Information on Temporary Tires
Please refer to the sample below.
1. Temporary tires
2. Nominal width of tire in millimeters
3. Ratio of height to width (aspect ratio)
4. Diagonal
5. Rim diameter code
6. Load index & speed symbol
T115/70D16 90M is an example of a tire size and load index rating. Here is an
explanati ...
Mazda 6 Service Manual: Diagnostic assist function
Structural View
Switch location
LCD Inspection
1. With audio on, first press the POWER button, then simultaneously press the
SEEK button (upper) for approximately 1 second.
2. Inspect the LCD according to the following table:
3. Turn the audio off or the ignition switch to the LOCK posi ...