Inspection Of Pcm And Its Circuit; Wire Harness And Connectors - Suzuki sq-416-420-625 Service Manual

7B1-30 AUTOMATIC TRANSMISSION (4 A / T)
Condition
Poor 1st speed run-
ning or excessive
slippage in "D" or "2"
Unable to run or ex-
cessive slippage in
"L" range
Unable to run or ex-
cessive slippage in
"R" range
Poor 1–2 shift, ex-
cessive slippage
Poor 2–3 shift, ex-
cessive slippage
Poor start or surging
in "D" range
Poor 3–4 shift, ex-
cessive slippage i li
Poor start or judder-
ing in "R" range
Excessive shock on
1– 2 shift
Non operate lock-up
system
Abnormal noise in
"P" or "N" range
SCAN TOOL DATA

INSPECTION OF PCM AND ITS CIRCUIT

WIRE HARNESS AND CONNECTORS

Possible Cause
D Fluid pressure leakage from forward clutch
due to wear or breakage of O/D case seal
ring
D Overdrive clutch slipping
D Fluid pressure leakage of forward clutch
due to wear or breakage of O/D case seal
ring
D Reverse brake disc slipping
D Broken brake piston O-ring
D Fluid pressure leakage to direct clutch due
to wear or breakage of center support seal
ring
D Worn direct clutch
D Fluid pressure leakage to overdrive clutch
due to wear or breakage of O/D case seal
ring
D Faulty second brake
D Broken O-ring of second brake piston
D Faulty second coast brake (in "2" range)
D Fluid pressure leakage to overdrive clutch
due to wear or breakage of O/D case seal
ring
D Worn direct clutch bushing
D Direct clutch slipping
D Foreign material caught in direct clutch pis-
ton check ball
D Fluid pressure leakage of forward clutch
due to wear or breakage of O/D case seal
ring
D Malfunction of forward clutch
D Faulty overdrive brake
D Faulty overdrive clutch
D Fluid pressure leakage of direct clutch due
to wear or breakage of oil center support
seal ring
D Worn direct clutch
D Faulty one-way clutch
D Faulty torque converter
D Worn oil pump
-Refer to SECTION 6/6-1.
-Refer to SECTION 6/6-1.
-Refer to SECTION 6/6-1.
Correction
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.