Suzuki Wagon R Plus RB310, Service Manual

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AUTOMATIC TRANSAXLE (M13 ENGINE) 7B1-43
Diagnostic Flow Table A-1: No Gear Shift to O/D
System Description
TCM does not shift to O/D gear under any of the following conditions.
• O/D OFF switch is turned ON (“O/D OFF” lamp lights).
• Engine coolant temperature is less than 50°C (122°F).
• A/T fluid temperature is less than 20°C (68°F).
• TCM detects the following DTCs.
P0712/P0713/P0717/P0722/P0785/P0962/P0963/P0973/P0974/P0976/P0977/P1701/P1702/P1703
Troubleshooting
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and tester, on a level road.
Step Action Yes No
1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
2 Check DTC.
Is DTC P0712, P0713, P0717, P0722, P0785,
P0962, P0963, P0973, P0974, P0976, P0977,
P1701, P1702 and/or P1703 detected? Perform DTC flow table
to repair and retry. Go to Step 3.
3 Perform running test under the following conditions
and measure voltage between terminal “E13-16” of
TCM connector and ground, terminal “E13-15” of
TCM connector and ground.
• O/D OFF switch is turned OFF. (“O/D OFF”
lamp does not light)
• Engine coolant temperature is in normal oper-
ating temperature.
• Select lever is in “D” range.
• Drive vehicle with 4th gear condition referring
to “Automatic Gear Shift Diagram” in this sec-
tion.
Do results satisfy the value as follows?
Voltage between terminal “E13-16” of TCM con-
nector and ground: 0 – 1 V
Voltage between terminal “E13-15” of TCM con-
nector and ground: 9 – 14 V
Faulty shift solenoid
valve, circuit or tran-
saxle. “BRN” circuit shorted to
power circuit or open, or
“BLK/YEL” circuit
shorted to ground. If wire
is OK, go to Step 4.
4 O/D OFF switch signal inspection.
With ignition switch ON, check voltage between
terminal “E12-9” of TCM connector and ground.
O/D OFF switch OFF (“O/D OFF” lamp does not
light): 8 – 14 V
O/D OFF switch ON (“O/D” OFF” lamp lights):
0 – 1 V
Is result as specified? Substitute a known-
good TCM and recheck. Faulty O/D OFF switch
or its circuit. If OK substi-
tute a known-good TCM
and recheck.