Mazda 3 Service Manual: Instrument Cluster Inspection
Speedometer
Using a speedometer tester
CAUTION:
-
When only the front or the rear wheels are driven using a speedometer tester, the ABS or DSC may determine that the vehicle speed signal is in error and the engine cannot be stopped by the normal operation. If the engine cannot be stopped, perform an emergency engine stop operation..
1. Adjust the tire pressure to the specification.
2. Using a speedometer tester, verify that the tester reading is as indicated in the table below.
3. Verify that the speedometer reading is within the range indicated in the table.
-
If the speedometer does not move or the indication is not within the allowable range, inspect the PCM, ABS HU/CM (with ABS) or DSC HU/CM (with DSC), and related wiring harnesses.
-
If the PCM, ABS HU/CM (with ABS) or DSC HU/CM (with DSC), and related wiring harnesses are normal, replace the instrument cluster.
|
Speedometer tester indication (km/h) |
Allowable range (km/h) |
Speedometer tester indication (mph) |
Allowable range (mph) |
|
20 |
17—23 |
10 |
9—11 |
|
40 |
36—44 |
20 |
18—22 |
|
60 |
54—66 |
30 |
27—33 |
|
80 |
72—88 |
40 |
36—44 |
|
100 |
90—110 |
50 |
45—55 |
|
120 |
108—132 |
60 |
54—66 |
|
140 |
126—154 |
70 |
63—77 |
Using the M-MDS
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the IDS.
-
Select “DataLogger”.
-
Select “Modules”.
-
Select “IC”.
3. Verify that it is displayed according to the table using “SPDMTR”.
-
If the speedometer does not move or the indication is not within the allowable range, inspect the related wiring harnesses.
-
If the related wiring harnesses are normal, replace the instrument cluster.
|
M-MDS display |
Instrument cluster display |
|
60 km/h |
Speedometer gauge needle moves to approx. 60 km/h |
|
120 km/h |
Speedometer gauge needle moves to approx. 120 km/h |
|
Off |
Speedometer gauge needle moves to 0 km/h |
Tachometer
CAUTION:
-
If the engine speed exceeds the allowable range, the engine could be damaged. Therefore, when inspecting the tachometer, do not allow the engine speed to exceed the allowable range indication on the tachometer.
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the IDS.
-
Select “DataLogger”.
-
Select “Modules”.
-
Select “IC”.
3. Verify that it is displayed according to the table using “TACHOMTR”.
-
If the tachometer does not move or the indication is not within the allowable range, inspect the related wiring harnesses.
-
If the related wiring harnesses are normal, replace the instrument cluster.
|
M-MDS display |
Instrument cluster display |
|
3000 RPM |
Tachometer gauge needle moves to approx. 3,000 rpm |
|
6000 RPM |
Tachometer gauge needle moves to approx. 6,000 rpm |
|
Off |
Tachometer gauge needle moves to 0 rpm |
Fuel gauge
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the IDS.
-
Select “DataLogger”.
-
Select “Modules”.
-
Select “IC”.
3. Verify that it is displayed according to the table using “LCD_SEG”.
-
If any of the segments are not displayed, replace the instrument cluster.
Boost gauge
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the IDS.
-
Select “DataLogger”.
-
Select “Modules”.
-
Select “IC”.
3. Verify that it is displayed according to the table using “LCD_SEG”.
-
If any of the segments are not displayed, replace the instrument cluster.
Instrument Cluster Disassembly/Assembly
CAUTION:
Do not drop the instrument cluster or damage the printed board. This will
lead to a system malfunction.
1. Perform the instrument cluster configuration when replacing it..
...
Instrument Cluster Removal/Installation
CAUTION:
When replacing the instrument cluster, the configuration procedure must be
performed before removing the instrument cluster. Replacing the instrument cluster
without performing ...
Other materials:
Check Valve Inspection [Skyactiv G 2.0]
Airflow Inspection
1. Remove the vacuum hose..
2. Blow air into the vacuum hose using your mouth from the vacuum pump side and
verify that the air flows to the intake manifold side, then blow air from the intake
manifold side and verify that the air does not flow to the vacuum pump side.
...
Oil Control Valve (OCV) Inspection [Mzr 2.0, Mzr 2.5]
Coil Resistance Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the plug hole plate..
4. Disconnect the OCV connector.
5. Measure the resistance between terminals A and B using an ohmmeter.
OCV coil resistance
6.9—7.9 ohms [20°C {6 ...
Operation
System triggering conditions
The horn sounds intermittently and the
hazard warning lights flash for about 30
seconds when the system is triggered by
any one of the following:
Unlocking a door with the key, door
lock switch, or an inside door-lock knob.
Forcing open a door, the hood or th ...