Suzuki Grand Vitara Manual page 41

Condition
→
Poor 2 3 shift
→
Poor 3 O/D shift
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Possible cause
Shift solenoid valve No.1 circuit faulty
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
Transmission range sensor circuit faulty Inspect circuit for open, short and intermittent.
CAN communication circuit faulty
Accelerator pedal position sensor circuit
faulty
TCM
ECM
Shift solenoid valve No.2 circuit faulty
Pressure control solenoid valve circuit
faulty
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
Inputshaft speed sensor circuit faulty
Transmission range sensor circuit faulty Inspect circuit for open, short and intermittent.
CAN communication circuit faulty
Accelerator pedal position sensor circuit
faulty
"3" position switch circuit faulty
TCM
ECM
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Automatic Transmission/Transaxle:
Correction / Reference Item
Inspect circuit for open, short and intermittent.
If NG, repair.
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 "DTC P0122: Throttle Position
Sensor (Main) Circuit Low: in Section 1A",
"DTC P0123: Throttle Position Sensor (Main)
Circuit High: in Section 1A", "DTC P0222:
Throttle Position Sensor (Sub) Circuit Low: in
Section 1A" and "DTC P0223: Throttle Position
Sensor (Sub) Circuit High: in Section 1A".
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.
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
referring to "DTC P0122: Throttle Position
Sensor (Main) Circuit Low: in Section 1A",
"DTC P0123: Throttle Position Sensor (Main)
Circuit High: in Section 1A", "DTC P0222:
Throttle Position Sensor (Sub) Circuit Low: in
Section 1A" and "DTC P0223: Throttle Position
Sensor (Sub) Circuit High: in Section 1A".
Refer to "No Gear Shift to 4th Gear: "
Substitute a known-good TCM and recheck.
Substitute a known-good ECM and recheck.
5A-37