Suzuki Liana RH413, Service Manual

Page: 549 / 1302

Automatic Transmission/Transaxle: 5A-1
Transmission / Transaxle
Automatic Transmission/Transaxle
Precautions
Precautions in Diagnosing Trouble
S3RH0A5100001
• Don’t disconnect couplers from TCM and/or ECM,
battery cable from battery, TCM and/or ECM ground
wire harness from engine or main fuse before
checking the diagnosis information, such as DTC,
freeze frame data, etc., stored in TCM and/or ECM
memory.
Such disconnection will clear memorized information
in TCM and/or ECM memory.
• Using SUZUKI scan tool the diagnostic information
stored in ECM memory can be checked and cleared
as well. Before its use, be sure to read Operator’s
Manual supplied with it carefully to have good
understanding of its functions and usage.
• DTC stored in TCM can not be cleared by using ECM
application of SUZUKI scan tool in mass storage
cartridge. Be sure to follow “DTC Clearance” when
cleaning it.
• Priorities for diagnosing troubles
If two or more DTCs are stored, proceed to flow of
DTC which was detected earliest in order and follow
instruction in that flow. If no instructions are given,
troubleshoot DTCs according to the following
priorities.
1) DTCs other than “DTC P0171 / P0172: Fuel System
Too Lean / Rich in Section 1A”, “DTC P0300 / P0301
/ P0302 / P0303 / P0304: Random Misfire Detected
(Misfire Detected at 2 or More Cylinders) / Cylinder 1
/ Cylinder 2 / Cylinder 3 / Cylinder 4 Misfire Detected
in Section 1A” and “DTC P0400: Exhaust Gas
Recirculation Flow Malfunction in Section 1A”
2) “DTC P0171 / P0172: Fuel System Too Lean / Rich
in Section 1A” and “DTC P0400: Exhaust Gas
Recirculation Flow Malfunction in Section 1A”
3) “DTC P0300 / P0301 / P0302 / P0303 / P0304:
Random Misfire Detected (Misfire Detected at 2 or
More Cylinders) / Cylinder 1 / Cylinder 2 / Cylinder 3
/ Cylinder 4 Misfire Detected in Section 1A”
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• When substituting a known-good TCM and/or ECM,
check for the following conditions.
Neglecting this check may result in damage to good
TCM and/or ECM.
– All relays and actuators have resistance of
specified value.
– MAP sensor and TP sensor are in good condition.
Also, the power circuit of these sensors is not
shorted to the ground.
• When replacing TCM with used one, all learned
contents, which have been stored in TCM memory by
executing learning control, should be initialized after
replacement referring to “Learning Control
Initialization”.
Neglecting this initialization may cause excessive shift
shock.
Precautions for Disassembly and Reassembly
S3RH0A5100002
When repairing automatic transaxle, it is necessary to
conduct the on-vehicle test to investigate where the
cause of the trouble lies first.
Then whether overhaul should be done or not is
determined. If the transaxle is disassembled without
such preliminary procedure, not only the cause of the
trouble would be unknown, but also a secondary trouble
may occur and often time would be wasted.
As the automatic transaxle consists of high precision
component, the following cautions should be strictly
observed when handling its parts in disassembly and
reassembly.
• Disassembling valve body assembly is prohibited
essentially. However, a few parts can be
disassembled. When disassembling valve body
component parts, confirm whether their parts are
allowed to disassemble or not referring to “Valve Body
Assembly Disassembly and Reassembly”.
• When component part of forward clutch, direct clutch,
2nd brake and/or O/D and 2nd coast brake, namely
clutch disc, brake disc, retaining plate and/or
separator plate, have been replaced, all learned
contents, which have been stored in TCM memory by
executing learning control, should be initialized
referring to “Learning Control Initialization”.
• Make sure to wash dirt off from the transaxle so that
no such dirt will enter the transaxle during
dismounting and remounting.
• Select a clean place free from dust and dirt for
overhauling.
• Place a rubber mat on the work bench to protect parts
from damage.
• Work gloves or shop cloth should not be used. (Use a
nylon cloth or a paper towel.)
• When separating the case joint, do not pry with a
screwdriver or such but tap with a plastic hammer
lightly.
• Make sure to wash dirt off from the transaxle so that
no such dirt will enter the transaxle during
disassembly and reassembly.