Suzuki Swift User Manual page 525

7B-34 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
1. Drive shaft (LH)
2. Oil pan
9) Possible causes for out-of-specification line pressure are as
follows. Check each part which is suspected to be the cause.
Line pressure
Higher than specification
in D and R ranges
Lower than specification
in D and R ranges
Lower than specification
only in D range
Lower than specification
only in R range
10) Reinstall plug and tighten it to specification.
Tightening Torque
(a): 7.5 N·m (0.75 kg-m, 5.5 lb-ft)
Possible causes
D Regulator valve defective
D Throttle valve in valve body
defective
D Accelerator cable and oil
pressure control cable
maladjusted
D Oil pump defective
D Regulator valve defective
D Throttle valve in valve body
defective
D Accelerator cable and oil
pressure control cable
maladjusted
D Forward clutch oil pressure
system oil leakage
D D range oil pressure system
oil leakage
D Direct clutch oil pressure
system oil leakage
D 1st-reverse brake oil
pressure system oil leakage
D R range oil pressure system
oil leakage