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 NO.24 VIBRATION CONCERNS (ENGINE) [MZR-CD (RF Turbo)]

NO.24 VIBRATION CONCERNS (ENGINE) [MZR-CD (RF Turbo)]

id0103f1822200

24

VIBRATION CONCERNS (ENGINE)

DESCRIPTION

• Vibration from the under hood or driveline.

POSSIBLE CAUSE

• Loose attaching bolts or worn parts
• Cooling fan seat are improper
• Engine or transaxle mounts are improperly installed
• Components malfunction such as worn parts
• Erratic signal from CMP sensor
• ECT sensor or related circuit malfunction
• Accelerator pedal position (APP) sensor or related circuit malfunction
• MAF/IAT sensor or related circuit malfunction
• Fuel injector malfunction
• Vacuum leakage
• Improper tension or damaged drive belts
• Improper balance of wheels or tires
• Driveline malfunction
• Suspension malfunction
Warning
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION

1
Inspect the following components for loose attaching bolts or worn parts:
• Cooling fan
• Cooling fan seat
• Drive belt and pulley
• Engine mounts
• Exhaust system
Are all items normal?
Yes
Go to the next step.
No
Readjust or retighten the engine mount installation position.
Service if necessary for other parts.
2
Inspect the vacuum leakage.
Are the vacuum hoses normal?
Yes
Go to the next step.
No
Service if necessary.
Repeat Step 2.
3
Connect the WDS or equivalent to the DLC-2.
Turn the engine switch to the ON position.
Retrieve any DTCs.
Are any DTCs displayed?
Yes

DTC is displayed:

Go to the appropriate DTC test.

Communication error message is displayed:

Inspect following:
• Open circuit between PCM control relay and PCM terminal 119 or 120
• Open circuit PCM control relay and PCM terminal 105
• PCM control relay stuck open
• Open or poor ground circuit (PCM terminal 1, 2, 3, 114 or 117)
• Poor connection to vehicle body ground
No

No DTC is displayed:

Go to the next step.
4
Inspect the APP sensor.
Is the APP sensor normal?
Yes
Go to the next step.
No
Replace the accelerator pedal component.
5
Inspect the adjustment of neutral switch.
Is the neutral switch adjusted correctly?
Yes
Go to the next step.
No
Adjust the neutral switch correctly.
6
Visually inspect the CMP sensor and the teeth of the pulse wheel.
Are the CMP sensor and the teeth of the pulse wheel normal?
Yes
Inspect the following PIDs:
• ECT
• IAT
• MAF
• RPM
If the PID value is not as specified, repair or replace malfunctioning parts.
If the PID value is normal, go to the next step.
No
Replace malfunctioning parts.
7
Inspect the fuel injector.
Is the fuel injector normal?
Yes
Inspect the following systems:
• Wheels
• Transaxle and mounts
• Driveline
• Suspension
Service if necessary.
No
Repair or replace if necessary.
8
Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
- If the vehicle is repaired, troubleshooting completed.
- If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.