TROUBLESHOOTING [GF4A-EL]
12
TORQUE CONVERTER CLUTCH (TCC) NON-OPERATION
TROUBLESHOOTING HINTS
Basically, the TCC does not operate when the fail-safe is operating. Verify the diagnostic trouble code at first. If the TCC
operates when driving at high speeds only, the malfunction (poor adjustment) is in the O/D OFF switch circuit or transaxle
range switch circuit.
Caution
•
If the TCC or piston is stuck, inspect them. In addition, inspect the oil cooler for foreign particles which may have
mixed in with the ATF.
© T C C piston slippage, burned
• Line pressure low
• Malfunction of throttle position sensor
• Malfunction of engine coolant temperature sensor
• Malfunction of vehicle speedometer sensor
• Malfunction of input/turbine speed sensor
• Malfunction of sensor ground
• Malfunction of torque converter clutch control solenoid valve (Sticking)
• Malfunction of control valve body system (Poor operation, sticking)
© Malfunction of throttle position sensor (Not operating linear)
© Malfunction of input/turbine speed sensor or vehicle speedometer sensor
STEP
INSPECTION
ACTION
1
W ith indicator switch at ON, does O/D OFF
indicator light indication correspond to O/D
OFF switch operation?
Yes
Go to next step
No
Go to No.26 “O/D OFF INDICATOR LIGHT DOES NOT
ILLUMINATE WHEN O/D OFF SWITCH IS TURNED ON”,
No.27 “O/D OFF INDICATOR LIGHT ILLUMINATES
WHEN O/D OFF SWITCH IS NOT TURNED ON"
2
Check the voltage at the following terminal of
the powertrain control module
c r 01—40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
• TCC control solenoid valve signal
Is terminal voltage okay?
Yes
Go to next step
No
Repair or replace any defective parts
3
Check the voltage at the following terminals of
the powertrain control module
oy 01—40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
• Throttle position sensor signal
• Vehicle speedometer sensor signal
• NE signal
• Ground (Engine, body)
Are terminal voltage okay?
Yes
Replace powertrain control module
D- 01-40B POWERTRAIN CONTROL MODULE (PCM)
REMOVAL/INSTALLATION [KL]
No
Repair or replace any defective parts
13
| n o k i c k d o w n
TROUBLESHOOTING HINTS
If the transaxle does not downshift though shifting is normal, the malfunction is in the throttle position sensor circuit (including
the sensor ground, sensor harness, and connector).________________________________________________________________
0 5 -0 1 B-31
Summary of Contents for MX-6 1998
Page 1: ......
Page 501: ...STARTING SYSTEM 3 If not as specified replace the starter interlock switch 01 19 3...
Page 803: ...MANUAL TRANSAXLE W 6 U 5 1 5 W A C 05 15 7...
Page 934: ...CONTROL SYSTEM CONTROL SYSTEM STRUCTURAL VIEW W6U740WA0 07 40 2...
Page 983: ...SERVICE TOOLS 08 60 SERVICE TOOLS 08 RESTRAINTS S S T 08 60 1 08 RESTRAINTS SST 08 60 1...