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

id0103f1822200

24 | VIBRATION CONCERNS (ENGINE)
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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
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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. (See DTC TABLE [MZR-CD (RF Turbo)].) 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. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR-CD (RF Turbo)].) Is the APP sensor normal? | Yes | Go to the next step.
No | Replace the accelerator pedal component.
5 | Inspect the adjustment of neutral switch. (See NEUTRAL SWITCH INSPECTION [MZR-CD (RF Turbo)].) 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: (See PCM INSPECTION [MZR-CD (RF Turbo)].) • 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. (See FUEL INJECTOR INSPECTION [MZR-CD (RF Turbo)].) 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. (See FUEL INJECTOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])
8 | Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR-CD (RF Turbo)].) • 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.