P" Range Test; A/T Symptom Diagnosis - Suzuki Liana RH413 Service Manual

5A-36 Automatic Transmission/Transaxle:

"P" Range Test

1) Stop vehicle on a slope of 5 degrees or more, shift
select lever to "P" range and at the same time apply
parking brake.
2) After stopping engine, depress brake pedal and
release parking brake.
3) Then, release brake pedal gradually and check that
vehicle remains stationary.
Troubleshooting
Condition
Vehicle moves at "P"
range or remains
stationary at "N" range

A/T Symptom Diagnosis

Trouble Diagnosis 1
Electrical repair
Condition
Excessive shift shock
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Possible cause
Defective parking lock pawl or spring
Possible cause
Shift solenoid valve-A and/or -B circuit
faulty
Pressure control solenoid valve circuit
faulty
Timing solenoid valve circuit faulty only
when N → D or 3 ↔ O/D shifting
Output shaft speed sensor / VSS circuit
faulty
Input shaft speed sensor circuit faulty
Transmission fluid temperature sensor
circuit faulty
Throttle position signal circuit faulty
Engine speed signal circuit faulty
Torque reduction request signal circuit
faulty
Throttle position sensor circuit faulty
Crankshaft position sensor circuit faulty Inspect circuit for open, short and intermittent
TCM
ECM
Improper learning control of TCM when
O/D ↔ 3 shifting and any upshifting
4) Depress brake pedal and shift select lever to "N"
range.
5) Then, release brake pedal gradually and check that
vehicle moves.
WARNING
!
Before test, make sure no one is around
vehicle or down on a slope and keep watchful
for safety during test.
Correction / Reference Item
Inspect. If NG, repair.
Correction / Reference Item
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent
referring to "DTC P0120 (No. 13): Throttle
Position Circuit Malfunction in Section 1A". If
NG, repair.
referring to "DTC P0335 (No. 23): Crankshaft
Position (CKP) Sensor Circuit Malfunction in
Section 1A". If NG, repair.
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.
Initialize learning control and perform learning
referring to "Learning Control Initialization" and
"Brief Learning".
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