Mazda CX-7 2007 Workshop Manual page 340

SYMPTOM TROUBLESHOOTING [L3 WITH TC]
STEP INSPECTION
3 Inspect CMP and CKP sensor for the following;
• Installation condition
(See01-40-45 CAMSHAFT POSITION
(CMP) SENSOR REMOVAL/
INSTALLATION[L3 WITH TC].)
(See01-40-42 CRANKSHAFT POSITION
(CKP) SENSOR REMOVAL/
INSTALLATION[L3 WITH TC].)
• Damaged trigger wheel and camshaft
• Open or short circuit in the wiring harnesses
Is there any malfunction detected?
4 Perform the self-test function using the M-MDS.
Turn the ignition switch to the ON position.
Retrieve any DTCs.
Is a DTC displayed?
5 Connect the M-MDS to the DLC-2.
Access and monitor the following PIDs using the
data monitor function.
• ACSW
• APP
• BOO
• ECT
• MAF
• TP
• O2S11
• O2S12
• LONGFT1
• SHTFT1
• PSP (PCM terminal 2T)
Do the PIDs indicate the correct values under
trouble condition?
(See01-40-6 PCM INSPECTION[L3 WITH TC].)
6 Perform the EGR system operation inspection.
(See01-03-78 ENGINE CONTROL SYSTEM
OPERATION INSPECTION[L3 WITH TC].)
Does the EGR system operate properly?
7 Perform the TP sweep inspection.
(See01-03-78 ENGINE CONTROL SYSTEM
OPERATION INSPECTION[L3 WITH TC].)
Does the electronic throttle control system work
properly?
8 Perform the Purge Control System Operation
inspection.
(See01-03-78 ENGINE CONTROL SYSTEM
OPERATION INSPECTION[L3 WITH TC].)
Does the purge solenoid valve work properly?
9 Perform the A/C Cut-off Operation Inspection.
(See01-03-78 ENGINE CONTROL SYSTEM
OPERATION INSPECTION[L3 WITH TC].)
Does the A/C Cut-off Operation work properly?
10 Inspect adjustment of TR switch.
(See05-17-11 TRANSAXLE RANGE (TR)
SWITCH INSPECTION[AW6A-EL, AW6AX-EL].)
Is TR switch adjusted properly?
11 Access and monitor the FUEL_PRES PID.
Is the FUEL_PRES PID value within the
specification?
(See01-40-6 PCM INSPECTION[L3 WITH TC].)
12 Is the vehicle accelerate performance normally?
01-03–40
RESULTS
Yes Repair or replace the malfunctioning part according
inspection results.
No Go to the next step.
Yes DTC is displayed:
Go to the appropriate DTC test.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No No DTC is displayed:
Go to the next step.
Yes Go to the next step.
No Inspect and repair or replace suspected parts and the
related harnesses.
If the malfunction remains, perform the intermittent
concern troubleshooting procedure.
(See01-03-76 INTERMITTENT CONCERN
TROUBLESHOOTING[L3 WITH TC].)
Yes Go to the next step.
No Inspect or replace the malfunctioning parts, according
to the inspection results.
Yes Visually inspect the throttle body (damaged/
scratching.) If normal, go to the next step.
No Inspect or replace the malfunctioning parts, according
to the inspection results.
Yes Go to the next step.
No Inspect or replace the malfunctioning parts, according
to the inspection results.
Yes Go to the next step.
No Repair or replace the malfunctioning parts according to
inspection results.
Yes Go to the next step.
No Perform N position leaning.
(See .)
If problem remains replace TR switch.
(See05-17-25 TCM REMOVAL/INSTALLATION[AW6A-
EL, AW6AX-EL].)
Yes Go to Step 15.
No Go to the next step.
Yes Go to the next step.
No Go to Step 15.
ACTION