Suzuki WagonR+ RB310 Service Manual page 1428

Trouble Diagnosis Table
NOTE:
For the inspection of throttle position sensor, refer to "TP SENSOR" in Section 6E.
Trouble diagnosis table-1
Electrical Repair
Condition
1st → 2nd
2nd → 3rd
3rd → 4th
4th → 3rd
3rd → 2nd
2nd →1st
Shift point too high or
too low
Vehicle does not move
Excessive slip
Excessive shock at
N → D or N → R
No lock-up or
No lock-up OFF
Possible Cause
• Output shaft speed sensor or its circuit faulty Inspect output shaft speed sen-
• Shift solenoid -D (No.4) (1st → 2nd), -A
(No.1) (1st → 3rd), -E (No.5) (2nd → 3rd),
and/or its circuit faulty
• Throttle position sensor or its circuit faulty
• TCM faulty
• Output shaft speed sensor or its circuit faulty Inspect output shaft speed sen-
• Shift solenoid -B (No.2), -C (No.3) or its cir-
cuit faulty
• O/D CUT switch circuit faulty
• Throttle position sensor or its circuit faulty
• TCM faulty
• Shift solenoid -C (No.3) (4th → 3rd), -D
(No.4) (2nd → 1st), -A (No.1) (3rd → 2nd), -B
(No.2) (4th → 3rd), -E (No.5) (3rd → 2nd) or
its circuit faulty
• Throttle position sensor or its circuit faulty
• TCM fault
• Throttle position sensor, output shaft speed
sensor or its circuit faulty
• Shift solenoid -A (No.1), -C (No.3), -D (No.4)
or its circuit faulty
• Shift solenoid -A (No.1) to -E (No.5) or its cir-
cuit faulty
• Shift solenoid -A (No.1), -D (No.4), -E (No.5)
or its circuit faulty
• ISC circuit
• TCC (lock-up) solenoid valve or its circuit
faulty
• Throttle position sensor or its circuit faulty
• Input shaft speed and/or output shaft speed
sensor or its circuit faulty.
• Abnormal engine rev. signal or its circuit.
• ECM faulty
AUTOMATIC TRANSMISSION (4 A/T) 7B-17
Correction
sor.
Repair or replace.
Inspect TP sensor.
Replace TCM.
sor.
Repair or replace.
Refer to "O/D OFF SWITCH" in
this section and/or inspect its cir-
cuit.
Inspect TP sensor.
Replace TCM.
Repair or replace.
Inspect TP sensor.
Replace TCM.
Inspect TP sensor and/or output
shaft speed sensor.
Repair or replace.
Repair or replace.
Repair or replace.
Inspect ISC circuit.
Repair or replace.
Refer to "THROTTLE POSITION
SENSOR" in Section 6E.
Refer to "ECT SENSOR" in Sec-
tion 6E.
Repair or replace.
Inspect ECM.