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:
Column Cover Removal/Installation
1. Pull down the steering wheel.
2. Pull the upper column cover in the direction of the arrow in the order of
(1) and (2), then remove the upper column cover while detaching the hooks and pins.
3. Pull up the steering wheel.
4. Remove the ignition key illumination..
5. Remove the scre ...
Front Fog Light Removal/Installation
Except Mazdaspeed3
1. Disconnect the negative battery cable..
2. Remove the front bumper..
3. Pull the wiring harness from the hook in the direction of the arrow shown
in the figure and remove it.
4. Disconnect the connector.
5. Pull the wiring harness in the direction of the arrow (2 ...
Engine Tune Up [Mzr 2.3 Disi Turbo]
NOTE:
If the accelerator pedal is depressed continuously for a specified time,
the engine speed may decrease to the idle speed. This is due to the fuel cut
control operation, which prevents overheating, and it does not indicate a malfunction.
Engine Tune-up Preparation
1. Verify ...