Mazda CX 7. Manual - part 4

 

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Mazda CX 7. Manual - part 4

 

 

GENERAL INFORMATION 

00-00–11

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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.

End Of Sie

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 

00-00–12

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

00-00

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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49 SE01 310

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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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