Suzuki Swift Sport 2004 Service & Repair Manual page 680

5A-36 Automatic Transmission/Transaxle:
Condition
→
Poor 4 3 shift
→
Poor 3 2 shift
→
Poor 2 1 shift
Incorrect gear shift point Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
Possible cause
Shift solenoid valve-B circuit faulty
Pressure control solenoid valve circuit
faulty
Timing solenoid valve circuit faulty
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
Input shaft speed sensor circuit faulty
CAN communication circuit faulty
Throttle position sensor circuit faulty
"3" position switch circuit faulty
TCM
ECM
Shift solenoid valve-A circuit faulty
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
CAN communication circuit faulty
Throttle position sensor circuit faulty
TCM
ECM
Shift solenoid valve-A circuit faulty
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
CAN communication circuit faulty
Throttle position sensor circuit faulty
TCM
ECM
Pressure control solenoid valve circuit
faulty
CAN communication circuit faulty
Throttle position sensor circuit faulty
TCM
ECM
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.
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 "Electric Throttle Body Assembly
On-Vehicle Inspection in Section 1C". If NG,
repair.
Refer to "No Gear Shift to 4th gear".
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.
Inspect circuit for open, short and intermittent.
If NG, repair.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent
referring to "Electric Throttle Body Assembly
On-Vehicle Inspection in Section 1C". If NG,
repair.
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.
Inspect circuit for open, short and intermittent.
If NG, repair.
If NG, repair.
Inspect circuit for open, short and intermittent.
If NG, repair.
Inspect circuit for open, short and intermittent
referring to "Electric Throttle Body Assembly
On-Vehicle Inspection in Section 1C". If NG,
repair.
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.
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 "Electric Throttle Body Assembly
On-Vehicle Inspection in Section 1C". If NG,
repair.
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.