Mazda CX-7 2007 Workshop Manual page 203

Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has the FREEZE FRAME DATA been
recorded?
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
• Check for related Service Bulletins and/or on-
line repair information availability.
• Is any related repair information available?
3 VERIFY RELATED PENDING OR STORED
DTCS
• Turn ignition switch to OFF, then ON (Engine
off).
• Verify pending code or stored DTCs using the
M-MDS.
• Are other DTCs present?
4 INSPECT A/C MAGNET CLUTCH OPERATION
• Turn the blower motor switch off.
• Is the magnet clutch still on?
5 INSPECT ELECTRONIC THROTTLE CONTROL
SYSTEM MALFUNCTION
• Inspect the following parts:
— APP sensor
(See01-40-33 ACCELERATOR PEDAL
POSITION (APP) SENSOR
INSPECTION[L3 WITH TC].)
— TP sensor
(See01-40-32 THROTTLE POSITION (TP)
SENSOR INSPECTION[L3 WITH TC].)
• Are they normal?
6 INSPECT PURGE SOLENOID VALVE
MALFUNCTION
• Perform the purge solenoid valve inspection.
(See01-16-9 PURGE SOLENOID VALVE
INSPECTION[L3 WITH TC].)
• Is the purge solenoid valve normal?
7 INSPECT AIR CLEANER ELEMENT
• Remove the air cleaner element with the
engine running.
• Does the engine speed increase?
8 INSPECT THROTTLE BODY PASSAGE
• Is the throttle body clogged?
9 INSPECT ENGINE COMPRESSION
• Inspect the engine compression.
(See01-10-9 COMPRESSION
INSPECTION[L3 WITH TC].)
• Is the engine compression normal?
10 INSPECT GENERATOR
• Perform the generator inspection.
(See01-17-6 GENERATOR INSPECTION[L3
WITH TC].)
• Is the generator normal?
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the repair order, then go
to the next step.
Yes Perform the repair or diagnosis according to the available
repair information.
• If the vehicle is not repaired, then go to the next step.
No Go to the next step.
Yes Repair the applicable DTCs.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Go to the next step.
Yes Refer to "A/C is always on or A/C compressor runs
continuously." of ENGINE SYMPTOM
TROUBLESHOOTING, then go to Step 11.
(See01-03-69 NO.24 A/C IS ALWAYS ON OR A/C
COMPRESSOR RUNS CONTINUOUSLY[L3 WITH TC].)
No Go to the next step.
Yes Go to the next step.
No Replace the necessary parts, then go to Step 11.
Yes Go to the next step.
No Replace the purge solenoid valve, then go to Step 11.
Yes Replace the air cleaner element, then go to Step 11.
No Go to the next step.
Yes Clean or replace the throttle body passage, then go to Step
11.
No Go to the next step.
Yes Go to the next step.
No Overhaul the engine, then go to Step 11.
Yes Go to the next step.
No Repair or replace the related part, then go to the next step.
ACTION
01-02–161
01-02