AUTOMATIC TRANSMISSION -
Troubleshooting
23-3
INSPECTION PROCEDURES FOR DIAGNOSIS CODES
Code No. 11, 12, 14 Throttle position sensor system (TPS) Probable cause
If the TPS output voltage is 4.8 V or higher when the engine is idling, the output
is judged to be too high and diagnosis code No. 11 is output. If the TPS output voltage
is 0.2 V or lower at times other than when the engine is idling, the output is judged
to be too low and diagnosis code No. 12 is output. If the TPS output voltage is 0.2
V or lower or if it is 1.2 V or higher when the engine is idling, the TPS adjustment
is judged to be incorrect and diagnosis code No. 14 is output.
D
Malfunction of the throttle position sensor
D
Malfunction of connector
D
Malfunction of the engine-A/T-ECU
*: Refer to ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).
Throttle position sensor check
(Refer to GROUP 13A - On-vehicle Service.)*
NG
Replace
OK
NG
Repair
OK
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.
Check the following connectors:
A-05, B-93, B-94
Harness check
D
Between throttle position sensor and engine-A/T-ECU
Code No. 15 A/T fluid temperature sensor system
Probable cause
If the A/T fluid temperature sensor output voltage is 2.6 V or more even after driving
for 10 minutes or more (if the A/T fluid temperature does not increase), it is judged
that there is an open circuit in the A/T fluid temperature sensor and diagnosis code
No. 15 is output.
D
Malfunction of the A/T fluid temperature sensor
D
Malfunction of connector
D
Malfunction of the engine-A/T-ECU
*: Refer to ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).
A/T fluid temperature sensor check (Refer to P.23-48.)*
NG
Replace
OK
NG
Repair
OK
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.
Check the following connectors:
A-22, B-92, B-94
Harness check
D
Between A/T fluid temperature sensor and engine-A/T-ECU.
Code No. 21 Crank angle sensor system
Probable cause
If no output pulse is detected from the crank angle sensor for 5 seconds or more
while driving at 25 km/h or more, it is judged that there is an open circuit in the
crank angle sensor and diagnosis code No. 21 is output.
D
Malfunction of the crank angle sensor
D
Malfunction of connector
D
Malfunction of the engine-A/T-ECU
Check the following connectors:
A-84, B-94
NG
Repair
OK
Harness check
D
Between crank angle sensor and engine-A/T-ECU.
NG
Repair
OK
Crank angle sensor system check
(Refer to GROUP 13 - Troubleshooting.)
OK
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.