Mazda 626 Station Wagon, Workshop Manual

Page: 452 / 577

WARNING AND INDICATOR SYSTEM
F terminal inspection
1. Inspect the voltage at the information display
terminal I.
2. Disconnect the information display connector.
3. Inspect for continuity between the information
display terminal F and ground.
G terminal inspection
1. Ignition switch at ACC.
2. Measure the temperature around the ambient
temperature sensor.
3. Measure the voltage of the G terminal on the
information display by using an ohmmeter.
4. Verify that the voltage is as shown in the graph.
(V )
L terminal inspection
1. At a constant speed, rotate the drive wheels by
using a chassis roller.
2. Measure the wave pattern of L terminal on the
information display.
3. Apply the speed of the vehicle to the following
calculation in order to calculate the cycle (T) and
verify that the cycle (T) does not vary largely from
the cycle on the screen of oscilloscope.
Calculation
T ( ms ) =
1413
T: 1 cycle
V: speed
V ( km /h)
4. Verify that the wave pattern is continuous and
output voltage is constant.
B+
T ( ms )
«------- ------- »
O terminal inspection
1. Measurer the wave pattern of the O terminal on
the information display by using an oscilloscope.
2. Set the headlight switch to either the first or
second position.
3. Set the panel light control switch to the brightest
position.
4. Verify that the pattern on the screen is as shown in
the figure.
ms
5. Verify that the pattern on the screen matches the
pattern shown in the figure as the panel light
control switch is gradually turned to the darkest
position.
T -3 0