Mazda Mazda6 Workshop Manual Supplement page 346

STEP
11 Inspect adjustment of accelerator position
sensor and idle switch.
(See F2–72 ACCELERATOR POSITION
SENSOR INSPECTION)
(See F2–70 IDLE SWITCH
Are accelerator position sensor and idle switch
adjusted correctly?
12 Inspect adjustment of neutral switch.
(See F2–69 NEUTRAL SWITCH
Is neutral switch adjusted correctly?
13 Visually inspect CKP sensor and teeth of pulse
wheel.
Are CKP sensor and teeth of pulse wheel okay?
14 Measure gap between CKP sensor and teeth of
pulse wheel.
Specification
1.5—2.5 mm {0.059—0.098 in}
Is gap within specification?
15 Visually inspect CMP sensor and teeth of pulse
wheel.
Are CMP sensor and teeth of pulse wheel okay?
16 Inspect fuel pressure sensor.
(See F2–79 FUEL PRESSURE SENSOR
INSPECTION)
Is fuel pressure okay?
17 Inspect suction control valve.
(See F2–54 SUCTION CONTROL VALVE
INSPECTION)
Is suction control valve okay?
18 Is engine compression correct?
(See B2–8 COMPRESSION
19 Inspect fuel injector.
(See F2–56 FUEL INJECTOR
Is fuel injector okay?
20 Inspect IDM.
(See F2–84 INJECTOR DRIVER MODULE
(IDM) INSPECTION)
Is IDM okay?
21 Inspect timing belt for following:
• Chipping of gear teeth
• Low tension
• Breakage damage or cracks
Is timing belt okay?
22 Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM. (See
End Of Sie
F2–194
TROUBLESHOOTING
INSPECTION
INSPECTION)
INSPECTION)
INSPECTION)
INSPECTION)
RESULTS
Yes Go to next step.
No Adjust accelerator position sensor and idle switch
correctly.
(See F2–73 ACCELERATOR POSITION SENSOR
ADJUSTMENT)
(See F2–71 IDLE SWITCH
Yes Go to next step.
No Adjust neutral switch correctly.
Yes Go to next step.
No Replace malfunctioning parts.
Yes Go to next step.
No Adjust CKP sensor position.
Yes Inspect following PIDs:
(See F2–65 PCM
• ECT
• IAT
• MAF
• RPM
If PID value is not as specified, repair or replace
malfunctioning parts.
If PID value is okay, go to next step.
No Replace malfunctioning parts.
Yes Go to next step.
No Replace common rail.
Yes Go to next step.
No Repair supply pump.
(See F2–54 SUPPLY PUMP
Yes Go to next step.
No Inspect for 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 as necessary.
Yes Go to next step.
No Repair or replace as necessary.
Yes Go to next step.
No Repair or replace as necessary.
Yes Inspect following:
• Clutch slippage
• CKP sensor
• VSS
If okay, remove and inspect supply pump and common
rail.
No If timing is incorrect, adjust valve timing.
If timing belt is not okay, replace timing belt.
F2–64 PCM REMOVAL/INSTALLATION)
ACTION
ADJUSTMENT)
INSPECTION)
INSPECTION)