NO.22 VIBRATION CONCERNS (ENGINE) [MZR-CD (RF Turbo)]

BME010300103293

22

VIBRATION CONCERNS (ENGINE)

DESCRIPTION

• Vibration from under hood or driveline.

POSSIBLE CAUSE

• Loose attaching bolts or worn parts
• Components malfunction such as worn parts
• Erratic signal from CKP sensor
• Erratic signal from CMP sensor
• ECT sensor or related circuit malfunction
• Accelerator pedal position sensor or related circuit malfunction
• MAF/IAT sensor or related circuit malfunction
• Idle switch or related circuit malfunction
• Incorrect adjustment of accelerator pedal position sensor and/or idle switch
• Fuel injector malfunction
• Vacuum leakage
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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual.
(See BEFORE SERVICE PRECAUTION [MZR-CD (RF Turbo)].)
(See AFTER SERVICE PRECAUTION [MZR-CD (RF Turbo)].)

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION

1
Inspect the following components for loose attaching bolts or worn parts:
• Main fan
• Additional fan
• Drive belt and pulley
• Engine mounts
• Exhaust system
Are all items normal?
Yes
Go to the next step.
No
Readjust or retighten engine mount installation position.
Service if necessary for other parts.
2
Inspect vacuum leakage.
Are 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 DTC.
Is DTC displayed?
Yes

DTC is displayed:

Go to the applicable DTC inspection.

Communication error message is displayed:

Inspect the following:
• Open circuit between PCM control relay and PCM terminal 53 or 79
• Open circuit PCM control relay and PCM terminal 69
• PCM control relay stuck open
• Open or poor GND circuit (PCM terminal 65, 85, 103 or 104)
• Poor connection vehicle body GND
No

No DTC is displayed:

Go to the next step.
4
Visually inspect the CKP sensor and teeth of the pulse wheel.
Are the CKP sensor and teeth of the pulse wheel normal?
Yes
Go to the next step.
No
Replace the malfunctioning parts.
5
Measure the gap between the CKP sensor and teeth of the pulse wheel.

Specification

1.5-2.5 mm {0.059-0.098 in}

Is the gap within the specification?
Yes
Go to the next step.
No
Adjust the CKP sensor position.
6
Inspect adjustment of the accelerator pedal position sensor and the idle switch.
Are the accelerator pedal position sensor and the idle switch adjusted correctly?
Yes
Go to the next step.
No
Adjust the accelerator pedal position sensor and the idle switch correctly.
7
Inspect adjustment of the neutral switch.
Is the neutral switch adjusted correctly?
Yes
Go to the next step.
No
Adjust the neutral switch correctly.
8
Visually inspect the CMP sensor and teeth of the pulse wheel.
Are the CMP sensor and teeth of the pulse wheel normal?
Yes
Inspect the following PIDs:
• ECT
• IAT
• MAF
• RPM
If PID value is not as specified, repair or replace the malfunctioning part.
If PID value is normal, go to the next step.
No
Replace the malfunctioning parts.
9
Inspect the fuel injector.
Is the fuel injector normal?
Yes
Inspect the following systems:
• Wheels
• Transmission and mounts
• Driveline
• Suspension
Service if necessary.
No
Repair or replace if necessary.
10
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)