Mazda 6 Workshop Manual page 232

STEP
11 Inspect the adjustment of the accelerator
position sensor and the idle switch.
Are the accelerator position sensor and the idle
switch adjusted correctly?
12 Inspect the neutral switch adjustment.
Is the neutral switch adjusted correctly?
13 Visually inspect the CKP sensor and the pulse
wheel teeth.
Are the CKP sensor and the pulse wheel teeth
normal?
14 Measure the gap between the CKP sensor and
the pulse wheel teeth.
Specification
1.5—2.5 mm {0.059—0.098 in}
Is the gap within the specification?
15 Visually inspect the CMP sensor and the pulse
wheel teeth.
Are the CMP sensor and the pulse wheel teeth
normal?
16 Inspect the fuel pressure sensor.
Is the fuel pressure normal?
17 Inspect the suction control valve.
Is the suction control valve normal?
18 Is the engine compression correct?
19 Inspect the fuel injector.
Is fuel injector normal?
20 Inspect the IDM.
Is the IDM normal?
21 Inspect the timing belt for the following:
• Gear teeth chipping
• Low tension
• Breakage damage or cracks
Is the timing belt normal?
22 Verify the test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If the malfunction remains, replace the PCM.
End Of Sie
NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE
12 LACK/LOSS OF POWER-ACCELERATION CRUISE
• Performance is poor under load (such as power down when climbing hills).
DESCRIPTION
F2–220
TROUBLESHOOTING
INSPECTION RESULTS
Yes Go to the next step.
No Adjust the accelerator position sensor and the idle
switch correctly.
Yes Go to the next step.
No Adjust the neutral switch correctly.
Yes Go to the next step.
No Replace the malfunctioning parts.
Yes Go to the next step.
No Adjust the CKP sensor position.
Yes Inspect the following PIDs:
(See F2–31 PCM
• ECT
• IAT
• MAF
• RPM
If the PID value is not as specified, repair or replace
the malfunctioning parts.
If the PID value is normal, go to the next step.
No Replace the malfunctioning parts.
Yes Go to the next step.
No Replace the common rail.
Yes Go to the next step.
No Repair the supply pump.
Yes Go to the next step.
No Inspect for the following:
• Damaged valve seat
• Worn valve stem and valve guide
• Worn or stuck piston ring
• Worn piston, piston ring or cylinder
• Improper valve timing
Service if necessary.
Yes Go to the next step.
No Repair or replace if necessary.
Yes Go to the next step.
No Repair or replace if necessary.
Yes Inspect the following:
• Clutch slippage
• CKP sensor
• VSS
If normal, remove and inspect the supply pump and
the common rail.
No If the timing is incorrect, adjust the valve timing.
If the timing belt is not normal, replace the timing belt.
ACTION
INSPECTION.)
B6E408018881107