Suzuki SX4 Service Manual page 738

5A-38 Automatic Transmission/Transaxle:
Condition
→
Poor 3 2 shift
→
Poor 2 1 shift
Incorrect gear shift point Output shaft speed sensor (VSS) circuit
Possible cause
Shift solenoid valve-A circuit faulty
Output shaft speed sensor (VSS) circuit
faulty
CAN communication circuit faulty
Throttle position sensor circuit faulty
TCM
ECM
Shift solenoid valve-A circuit faulty
Output shaft speed sensor (VSS) circuit
faulty
CAN communication circuit faulty
Throttle position sensor circuit faulty
TCM
ECM
faulty
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.
Inspect circuit for open, short and intermittent
referring to "DTC P0122: Throttle Position
Sensor (Main) Circuit Low in Section 1A" and/
or "DTC P0123: Throttle Position Sensor
(Main) Circuit High in Section 1A". 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.
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 P0122: Throttle Position
Sensor (Main) Circuit Low in Section 1A" and/
or "DTC P0123: Throttle Position Sensor
(Main) Circuit High in Section 1A". 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.
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 P0122: Throttle Position
Sensor (Main) Circuit Low in Section 1A" and/
or "DTC P0123: Throttle Position Sensor
(Main) Circuit High in Section 1A". If NG, repair.
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.