Rear Suspension

INTRODUCTION TO REAR SUSPENSION DIAGNOSIS
If the rear suspension is faulty, the vehicle will not run straightforward or noise will occur. Incorrect wheel alignment. malfunction of shock absorber, stabilizer bar, coil spring, control arms or worn or out-of-balance will cause these problems.

REAR SUSPENSION DIAGNOSIS TROUBLESHOOTING STRATEGY
Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find a rear suspension fault.
1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Find the malfunction by following the Symptom Chart.
4. Verify malfunction is eliminated.





SYMPTOM CHART

SYMPTOM PROCEDURES
Inspection Procedure 1
Squeaks Or Other Abnormal Noise

DIAGNOSIS
STEP 1. Check For Loose Rear Suspension Installation Bolts And Nuts.
If faulty, retighten it. Then go to Step 6.
If normal, go to Step 2.

STEP 2. Check The Malfunction Of Shock Absorber (Worn Bushings).
If faulty, replace it. Then go to Step 6.
If normal, go to Step 3.

STEP 3. Check The Upper Arms And/Or Lower Arms And/Or Toe Control Arms For Deformity Or Damage.
If faulty, replace it. Then go to Step 6.
If normal, go to Step 4.

STEP 4. Check The Trailing Arms For Deformity Or Damage.
If faulty, replace it. Then go to Step 6.
If normal, go to Step 5.

STEP 5. Check The Crossmember Deformed Or Damaged.
If faulty, adjust or replace it. Then go to Step 6.

STEP 6. Check Symptoms.
Check that the malfunction is eliminated.

Inspection Procedure 2
Poor Ride

DIAGNOSIS
STEP 1. Check The Excessive Tire Inflation Pressure.
If faulty, adjust the pressure. Then go to Step 4.
If normal, go to Step 2.

STEP 2. Check For Malfunction Of Shock Absorber (Weak Or Broken Springs).
If faulty, replace it. Then go to Step 4.
If normal, go to Step 3.

STEP 3. Check The Stabilizer Bar And/Or Stabilizer Link For Deformity Or Damage.
If faulty, replace it. Then go to step 4.

STEP 4. Check Symptoms.
Check that the malfunction is eliminated.

Inspection Procedure 3
Body Tilting

DIAGNOSIS
STEP 1. Check For Weak Or Deteriorated Bushings.
If faulty, replace it Then go to Step 6.
If normal, go to Step 2

STEP 2. Check For Weak Or Broken Springs.
If faulty, replace it Then go to Step 6
If normal, go to Step 3.

STEP 3. Check The Upper Arms And/Or Lower Arms And/Or Toe Control Arms For Deformity Or Damage.
If faulty, replace it Then go to Step 6
If normal, go to Step 4.

STEP 4. Check The Trailing Arms For Deformity Or Damage.
If faulty, replace it Then go to Step 6
If normal, go to Step 5

STEP 5. Check The Crossmember For Deformity Or Damage.
if faulty, replace it. Then go to Step 6.

STEP 6. Check Symptoms.
Check that the malfunction is eliminated