Suzuki GRAND VITARA Owner's Manual page 940

5A-72 Automatic Transmission/Transaxle:
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Voltage of TCC pressure control solenoid valve TCM terminal is
high although TCM is commanding TCC pressure control solenoid
to turn OFF.
(1 driving cycle detection logic)
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident 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.
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Keep engine running at idle speed in "P" range for 10 seconds or more.
5) Check DTC, pending DTC and freeze-frame data.
DTC Troubleshooting
Step
1 Was "A/T System Check" performed?
2 Check TCC pressure control solenoid valve circuit for
power supply short
1) Disconnect TCM connectors.
2) Check for proper connection to TCM at terminal "E92-3"
and "E92-5".
3) If connection is OK, turn ignition switch ON and measure
voltage between terminal "E92-3" of disconnected
harness side TCM connector and ground.
Is it 0 – 2 V?
3 Inspection TCC pressure control solenoid valve
1) Inspection TCC pressure control solenoid valve referring
to "Solenoid Valves (Shift Solenoid-A, Shift Solenoid-B,
TCC Pressure Control Solenoid and Pressure Control
Solenoid Inspection: ".
Is check results satisfactory?
Action
Trouble Area
• TCC pressure control solenoid valve circuit
shorted to power circuit.
• Malfunction of TCC pressure control solenoid
valve.
• TCM
Yes
Go to Step 2.
Go to Step 3.
Intermittent trouble or
faulty TCM. Check for
intermittent trouble
referring to "Intermittent
and Poor Connection
Inspection: in Section
00". If OK, substitute a
known-good TCM and
recheck.
No
Go to "A/T System
Check: ".
TCC pressure control
solenoid valve circuit is
shorted to power supply
circuit. If circuit is OK,
go to Step 3.
Replace TCC pressure
control solenoid valve
referring to
"Transmission Fluid
Temperature Sensor
Removal and
Installation: ".