NO.20 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN ALL POSITIONS/RANGES [FS5A-EL]

id050308802500

20

Noise occurs at idle when vehicle is stopped in all positions/ranges
DESCRIPTION
•  Transaxle is noisy in all positions and ranges when vehicle idling.
POSSIBLE CAUSE
•  The malfunction is in the oil pump which causes a high-pitched noise to be emitted from the transaxle at idle.
Note
•  If a noise is emitted during shifting only, the malfunction is in shift solenoid D, E or shift solenoid A, B, C. If a noise is emitted during shifting at certain gears only or during deceleration only, it is gear noise.
•  Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FS5A-EL].) (See BASIC INSPECTION [FS5A-EL].)

Diagnostic procedure

STEP

INSPECTION

ACTION
1
Inspect the engine condition.
Is there any engine concern (i. e. rough idle)?
Yes
Go to the appropriate symptom troubleshooting.
(See SYMPTOM DIAGNOSTIC INDEX [MZR 1.8, MZR 2.0, MZR 2.5].)
(See SYMPTOM DIAGNOSTIC INDEX [MZR 2.0 DISI].)
No
Go to the next step.
2
Does the noise stop when the solenoid connector is disconnected?
Yes
Go to the next step.
No
Overhaul the control valve body and repair or replace any malfunctioning parts.
(See Automatic Transaxle Workshop Manual FS5A-EL.)
If any problem remains, overhaul the transaxle and repair or replace any malfunctioning parts.
(See Automatic Transaxle Workshop Manual FS5A-EL.)
3
Inspect the value at the following PCM and TCM PIDs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR 1.8, MZR 2.0, MZR 2.5].)
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.0 DISI].)
(See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FS5A-EL].)
PCM PID:
•  APP
TCM PIDs:
•  THOP
•  OSS
•  TSS
Are the PID values normal?
(See PCM INSPECTION [MZR 1.8, MZR 2.0, MZR 2.5].)
(See PCM INSPECTION [MZR 2.0 DISI].)
Yes
Go to the next step.
No
Repair or replace any malfunctioning parts according to the inspection result.
4
Disconnect the TCM connector.
Is the resistance between the ground terminal at the TCM connector and the body ground less than 5.0 ohms?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit.
Reconnect the TCM connector.
5
Inspect the value at the following TCM PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FS5A-EL].)
•  LPS
Is the PID value normal?
Yes
Overhaul the control valve body and repair or replace any malfunctioning parts.
(See Automatic Transaxle Workshop Manual FS5A-EL.)
If any problem remains, overhaul the transaxle and repair or replace any malfunctioning parts.
(See Automatic Transaxle Workshop Manual FS5A-EL.)
No
Repair or replace any malfunctioning parts according to the inspection result.
6
•  Verify the 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 is completed.
•  If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.