Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 312
5A-39 Automatic Transmission/Transaxle:
Poor 3
→
2 shift
Shift solenoid valve No.1 circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
If NG, repair.
CAN communication circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Accelerator pedal position sensor circuit
faulty
Inspect circuit for open, short and intermittent
referring to “DTC P0122: Throttle Position
Sensor (Main) Circuit Low: For Petrol Engine
Model in Section 1A”, “DTC P0123: Throttle
Position Sensor (Main) Circuit High: For Petrol
Engine Model in Section 1A”, “DTC P0222:
Throttle Position Sensor (Sub) Circuit Low: For
Petrol Engine Model in Section 1A” and “DTC
P0223: Throttle Position Sensor (Sub) Circuit
High: For Petrol Engine Model in Section 1A”.
TCM
Substitute a known-good TCM and recheck.
ECM
Substitute a known-good ECM and recheck.
Poor 2
→
1 shift
Shift solenoid valve No.2 circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
If NG, repair.
CAN communication circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Accelerator pedal position sensor circuit
faulty
Inspect circuit for open, short and intermittent
referring to “DTC P0122: Throttle Position
Sensor (Main) Circuit Low: For Petrol Engine
Model in Section 1A”, “DTC P0123: Throttle
Position Sensor (Main) Circuit High: For Petrol
Engine Model in Section 1A”, “DTC P0222:
Throttle Position Sensor (Sub) Circuit Low: For
Petrol Engine Model in Section 1A” and “DTC
P0223: Throttle Position Sensor (Sub) Circuit
High: For Petrol Engine Model in Section 1A”.
TCM
Substitute a known-good TCM and recheck.
ECM
Substitute a known-good ECM and recheck.
Incorrect gear shift point Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
If NG, repair.
Pressure control solenoid valve circuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
CANcommunication circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Accelerator pedal position sensor circuit
faulty
Inspect circuit for open, short and intermittent
referring to “DTC P0122: Throttle Position
Sensor (Main) Circuit Low: For Petrol Engine
Model in Section 1A”, “DTC P0123: Throttle
Position Sensor (Main) Circuit High: For Petrol
Engine Model in Section 1A”, “DTC P0222:
Throttle Position Sensor (Sub) Circuit Low: For
Petrol Engine Model in Section 1A” and “DTC
P0223: Throttle Position Sensor (Sub) Circuit
High: For Petrol Engine Model in Section 1A”.
TCM
Substitute a known-good TCM and recheck.
ECM
Substitute a known-good ECM and recheck.
Condition
Possible cause
Correction / Reference Item
Automatic Transmission/Transaxle: 5A-40
Non operate TCC / lock-up
system
Lock-up control solenoid valve circuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Shift solenoid valve No.1 and/or No.2
circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Pressure control solenoid valve cicuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Output shaft speed sensor circuit faulty Inspect circuit for open, short and intermittent.
If NG, repair.
Input shaft speed sensor circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Transmission range sensor circuit faulty Inspect circuit for open, short and intermittent.
If NG, repair.
Transmission fluid temperature sensor
circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
CAN communication circuit faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
Crankshaft position sensor circuit faulty Inspect circuit for opnen, short and intermittent
Brake light switch circuit faulty
Refer to “No Lock-Up Occurs”.
Accelerator pedal position sensor circuit
faulty
Inspect circuit for open, short and intermittent
referring to “DTC P0122: Throttle Position
Sensor (Main) Circuit Low: For Petrol Engine
Model in Section 1A”, “DTC P0123: Throttle
Position Sensor (Main) Circuit High: For Petrol
Engine Model in Section 1A”, “DTC P0222:
Throttle Position Sensor (Sub) Circuit Low: For
Petrol Engine Model in Section 1A” and “DTC
P0223: Throttle Position Sensor (Sub) Circuit
High: For Petrol Engine Model in Section 1A”.
TCM
Substitute a known-good TCM and recheck.
ECM
Substitute a known-good ECM and recheck.
Higher or lower stall
speed
Pressure control solenoid valve circuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
TCM
Substitute a known-good TCM and recheck.
Excessive “N”
→
“D” or
“N”
→
“R” time lag
Pressure control solenoid valve circuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
TCM
Substitute a known-good TCM and recheck.
Higher or lower line
pressure
Pressure control solenoid valve circuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
TCM
Substitute a known-good TCM and recheck.
Excessive slippage in all
range
Pressure control solenoid valve circuit
faulty
Inspect circuit for open, short and intermittent.
If NG, repair.
TCM
Substitute a known-good TCM and recheck.
Condition
Possible cause
Correction / Reference Item
5A-41 Automatic Transmission/Transaxle:
Trouble Diagnosis 2
On-vehicle repair
Condition
Possible cause
Correction / Reference Item
Unable to run in all range Faulty valve body component
Replace valve body assembly.
Excessive shift shock
Engine abnormal condition
Inspect and repair engine.
Malfunction of shift solenoid valve No.1
and/or No.2
Inspect. If NG, replace.
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of input shaft speed sensor Inspect. If NG, replace.
Malfunction of transmission range
sensor
Inspect. If NG, replace.
Malfunction of Transmission fluid
temperature sensor
Inspect. If NG, replace.
Malfunction of pressure control solenoid
valve
Inspect. If NG, replace valve body assembly.
Malfunction of brake light switch except
N
→ D or N → R shifting
Inspect referring to “Brake Light Switch
Inspection in Section 9B”. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.
Faulty valve body component
Replace valve body assembly.
Poor 1
→
2 shift
Malfunction of shift solenoid valve No.2 Inspect. If NG, replace.
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of transmission range
sensor
Inspect. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.
Faulty valve body component
Replace valve body assembly.
Automatic Transmission/Transaxle: 5A-42
Poor 2
→
3 shift
Malfunction of shift solenoid valve No.1 Inspect. If NG, replace.
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of transmission range
sensor
Inspect. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.
Faulty valve body component
Replace valve body assembly.
Poor 3
→
O/D shift
Malfunction of shift solenoid valve No.2 Inspect. If NG, replace.
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of transmission range
sensor
Inspect. If NG, replace.
Malfunction of “3” position switch
Inspect. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.
Malfunction of pressure control solenoid
valve
Inspect. If NG, replace valve body assembly.
Faulty valve body component
Replace valve body assembly.
Poor O/D
→
3 shift
Malfunction of shift solenoid valve No.2 Inspect. If NG, replace.
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of “3” position switch
Inspect. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: For Petrol
Engine Model in Section 1A”, “DTC P0123:
Throttle Position Sensor (Main) Circuit High:
For Petrol Engine Model in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: For Petrol Engine Model in Section 1A”
and “DTC P0223: Throttle Position Sensor
(Sub) Circuit High: For Petrol Engine Model in
Section 1A”.
Malfunction of pressure control solenoid
valve
Inspect. If NG, replace valve body assembly.
Faulty valve body component
Replace valve body assembly.
Condition
Possible cause
Correction / Reference Item
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