Mazda CX 7. Manual — part 4
GENERAL INFORMATION
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Using the symptom troubleshooting
• Symptom troubleshooting shows diagnostic procedures, inspection methods, and proper action to be taken for
each trouble symptom.
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NG: GENERAL INFORMATION
TROUBLE SYMPTOM
14
Engine flares up or slips when upshifting or down shifting
DESCRIPTION
POSSIBLE
CAUSE
When accelerator is depressed while driving, engine speed increases but vehicle not.
There is clutch slip because clutch is stuck or line pressure is low.
Clutch stuck, slippage (forward clutch, 3-4 clutch, 2-4 brake band, one-way clutch 1, one-way clutch 2)
Line pressure low
Malfunction or mis-adjustment of TP sensor
Malfunction of VSS
Malfunction of input/turbine speed sensor
Malfunction of sensor ground
Malfunction of shift solenoid A, B or C
Malfunction of TCC solenoid valve
Malfunction of body ground
Malfunction of throttle cable
Malfunction of throttle valve body
Poor operating of mechanical pressure
Selector lever position disparity
TR switch position disparity
Note
Diagnostic procedure
STEP
INSPECTION
ACTION
Is line pressure okay?
Yes
Yes
Yes
2
Is shift point okay?
(See 05-17-5 ROAD TEST)
3
Stop engine and turn ignition switch on.
Is operating sound of shift solenoids heard?
Go to next step.
No
No
No
Go to next step
Go to symptom troubleshooting No.9 "Abnormal shift".
(See ATX Workshop Manual GF4A-EL (1666-1A-99F))
Inspect for shift solenoid mechanical stuck.
(See 05-17-14 Inspection of Operation)
4
Verify test results.
If okay, return to diagnostic index to service any additional symptoms.
If vehicle is repaired, troubleshooting completed.
1
DESCRIPTION
describes what
kind of TROUBLE
SYMPTOM
POSSIBLE
CAUSE
describes
possible
point of
malfunction
STEP shows
the order of
troubleshooting.
Reference
item(s) for
additional
information
to perform
INSPECTION.
Reference
item(s) to
perform
ACTION.
How to
perform
ACTION is
described in
the relative
material
shown.
When accelerator pedal is depressed for driveway, engine speed increase but vehicle speed increase
slowly.
Before following troubleshooting steps, make sure that Automatic Transaxle On-board Diagnostic and
Automatic Transaxle Basic Inspection are conducted.
If vehicle is not repaired or additional diagnostic information is not available, replace or reprogram PCM.
If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or
diagnosis.
If shift solenoids are okay, inspect for open or short
circuit between PCM connector terminal A, B or C.
Inspect for bend, damage, corrosion or loose
connection if shift solenoid A, B, or C terminal on ATX.
(See 05-17-15 AUTOMATIC TRANSAXLE
REMOVEVAL/INSTALLATION)
If problem remains, replace or overhaul transaxle and
repair or replace defective parts.
Overhaul control valve body and repair or replace any
defective parts.
Repair or replace any defective parts according to
inspection results.
Simulate SHIFT A, SHIFT B and SHIFT C PIDs
for ON.
ACTION
describes the
appropriate
action to be
taken according
to the result
(Yes/No) of the
INSPECTION.
INSPECTION
describes the
method to
quickly
determine the
malfunctioning
part(s).
Connect diagnostic tool to DLC-2.
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GENERAL INFORMATION
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UNITS
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Conversion to SI Units (Système International d'Unités)
• All numerical values in this manual are based on SI units. Numbers shown in conventional units are converted
from these values.
Rounding Off
• Converted values are rounded off to the same number of places as the SI unit value. For example, if the SI unit
value is 17.2 and the value after conversion is 37.84, the converted value will be rounded off to 37.8.
Upper and Lower Limits
• When the data indicates upper and lower limits, the converted values are rounded down if the SI unit value is
an upper limit, and rounded up if the SI unit value is a lower limit. Therefore, converted values for the same SI
unit value may differ after conversion. For example, consider 2.7 kgf/cm
2
in the following specifications:
210— 260 kPa {2.1— 2.7 kgf/cm
2
, 30— 38 psi}
270— 310 kPa {2.7— 3.2 kgf/cm
2
, 39— 45 psi}
• The actual converted values for 2.7 kgf/cm
2
are 265 kPa and 38.4 psi. In the first specification, 2.7 is used as
an upper limit, so the converted values are rounded down to 260 and 38. In the second specification, 2.7 is
used as a lower limit, so the converted values are rounded up to 270 and 39.
End Of Sie
WM: GENERAL INFORMATION
Electrical current
A (ampere)
Electric power
W (watt)
Electric resistance
ohm
Electric voltage
V (volt)
Length
mm (millimeter)
in (inch)
Negative pressure
kPa (kilo pascal)
mmHg (millimeters of mercury)
inHg (inches of mercury)
Positive pressure
kPa (kilo pascal)
kgf/cm
2
(kilogram force per square
centimeter)
psi (pounds per square inch)
Torque
N·m (Newton meter)
kgf·m (kilogram force meter)
kgf·cm (kilogram force centimeter)
ft·lbf (foot pound force)
in·lbf (inch pound force)
Volume
L (liter)
US qt (U.S. quart)
Imp qt (Imperial quart)
ml (milliliter)
cc (cubic centimeter)
cu in (cubic inch)
fl oz (fluid ounce)
Weight
g (gram)
oz (ounce)
GENERAL INFORMATION
00-00–13
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2007 Mazda CX-7 Workshop Manual (1871–1U–06B)
Revised 7/2006 (Ref. No. R065/06)
SERVICE CAUTIONS
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Injury/damage Prevention Precautions
• Depending on the vehicle, the cooling fan may operate suddenly even when the ignition switch is turned off.
Therefore, keep hands and tools away from the cooling fan even if the cooling fan is not operating to prevent
injury to personnel or damage to the cooling fan. Always disconnect the negative battery cable when servicing
the cooling fan or parts near the cooling fan.
Protection of the Vehicle
• Always be sure to cover fenders, seats and floor
areas before starting work.
Preparation of Tools and Measuring Equipment
• Be sure that all necessary tools and measuring
equipment are available before starting any work.
Special Service Tools
• Use special service tools or the equivalent when
they are required.
Malfunction Diagnosis System
• Use the Mazda modular diagnostic system (M-MDS) for malfunction diagnosis.
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GENERAL INFORMATION
00-00–14
2007 Mazda CX-7 Workshop Manual (1871–1U–06B)
Disconnection of the Negative Battery Cable
• When working with the negative battery cable disconnected, wait for 1 min or more to allow the back up power
supply of the SAS control module to deplete its stored power after the cable is disconnected.
• Disconnecting the battery cable will delete the memories of the clock, audio, and DTCs, etc. Therefore, it is
necessary to note down the information stored in those memories before disconnecting the cable.
• If the battery had been disconnected during vehicle maintenance or for other reasons, the window will not fully
close automatically. Initialize the power window system for the power window main switch and the sub switch
(FR).
(See 09-12-13 POWER WINDOW INITIALIZATION PROCEDURE)
Warning
• When the negative battery cable is disconnected, the initialization setting of the steering angle
sensor is cleared. Therefore, perform the initialization procedure after connecting the negative
battery cable. (See 09-40-8 STEERING ANGLE SENSOR INITIALIZATION PROCEDURE.)
Oil Leakage Inspection
• Use either of the following procedures to identify the type of oil that is leaking:
Using UV light (black light)
1. Remove any oil on the engine or transaxle/transmission.
Note
• Referring to the fluorescent dye instruction manual, mix the specified amount of dye into the engine oil or
ATF (or transaxle/transmission oil).
2. Pour the fluorescent dye into the engine oil or ATF (or transaxle/transmission oil).
3. Allow the engine to run for 30 min.
4. Inspect for dye leakage by irradiating with UV light (black light), and identify the type of oil that is leaking.
5. If no dye leakage is found, allow the engine to run for another 30 min. or drive the vehicle then reinspect.
6. Find where the oil is leaking from, then make necessary repairs.
Note
• To determine whether it is necessary to replace the oil after adding the fluorescent dye, refer to the
fluorescent dye instruction manual.
Not using UV light (black light)
1. Gather some of the leaking oil using an absorbent white tissue.
2. Take samples of engine oil and ATF (or transaxle/transmission oil), both from the dipstick, and place them next
to the leaked oil already on the tissue.
3. Compare the appearance and smell, and identify
the type of oil that is leaking.
4. Remove any oil on the engine or transaxle/
transmission.
5. Allow the engine to run for 30 min.
6. Check the area where the oil is leaking, then
make necessary repairs.
Removal of Parts
• While correcting a problem, also try to determine
its cause. Begin work only after first learning
which parts and sub-components must be
removed and disassembled for replacement or
repair. After removing the part, plug all holes and
ports to prevent foreign material from entering.
ATF OR
TRANSAXLE/
TRANSMISSION OIL
LEAKED OIL
ENGINE OIL
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