NO.2 EXCESSIVE NOISE FROM ELECTRIC POWER STEERING OIL PUMP

id060300800600

Note

• The operation sound occurs while the power steering oil pump is operating. If the abnormal noise is heard when the steering mechanism is turned from lock to lock while the vehicle is stopped, but is not heard while driving, this is a normal operation sound and it does not indicate a malfunction.

2

Excessive noise from electric power steering oil pump

TROUBLESHOOTING HINTS

•  Power steering fluid level is low

•  Air in EHPAS fluid line

•  Electric power steering oil pump is poor installation

•  Mount rubber (on bracket) is deterioration

•  Power steering oil pump internal malfunction

2	Excessive noise from electric power steering oil pump
TROUBLESHOOTING HINTS • Power steering fluid level is low • Air in EHPAS fluid line • Electric power steering oil pump is poor installation • Mount rubber (on bracket) is deterioration • Power steering oil pump internal malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT POWER STEERING FLUID LEVEL • Inspect the power steering fluid level when the engine is cold. • Is the power steering fluid level between MAX and MIN of the reserve tank?	Yes	Go to the next step.
1		No	Perform the Fluid Leakage Inspection and add the fluid. (See POWER STEERING FLUID INSPECTION.)
2	INSPECT AIR IN EHPAS FLUID LINE • Perform the air bleed. (See AIR BLEEDING [ZY, LF, L3, MZ-CD 1.6 (Y6)].) • Is the symptom solved?	Yes	Symptom troubleshooting completed.
2		No	Go to the next step.
3	INSPECT ELECTRIC POWER STEERING OIL PUMP INSTALLATION • Inspect the electric power steering oil pump installation condition. • Is the electric power steering oil pump installed properly?	Yes	Go to the next step.
3		No	Install the electric power steering oil pump properly.
4	INSPECT MOUNT RUBBER CONDITION • Inspect the mount rubber condition. • Is the mount rubber deterioration?	Yes	Replace the bracket.
4		No	Replace the power steering oil pump. (See ELECTRIC POWER STEERING OIL PUMP COMPONENT REMOVAL/INSTALLATION [ZY, LF, L3, MZ-CD 1.6 (Y6)].) (See ELECTRIC POWER STEERING OIL PUMP COMPONENT DISASSEMBLY/ASSEMBLY [ZY, LF, L3, MZ-CD 1.6 (Y6)].)