Toyota Celica 2005, Руководство по ремонту

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− DIAGNOSTICS AUTOMATIC TRANSAXLE (U240E)
DI − 689
2005 CELICA (RM1131U)
Evaluation:
Problem Possible cause
(a) Stall engine speed is low in D and R positions
S Engine output may be insufficient
S Stator one − way clutch is operating properly
HINT: If the value is larger or smaller than the specified value by
600 rpm or more, the torque converter could be faulty.
(b) Stall engine speed is high in D position
S Line pressure too low
S Forward clutch slipping
S
No.2 one − way clutch not operating properly
S
O/D clutch slipping
(c) Stall engine speed is high in R position
S Line pressure too low
S Direct clutch slipping
S 1st & reverse brake slipping
S O/D clutch slipping
(d) Stall engine speed is high in D and R positions
S Line pressure too low
S Improper fluid level
S
O/D one − way clutch not operating properly
(b) Measure the time lag.
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before
the shock can be felt. This is used for checking the condition of the O/D direct clutch, forward clutch,
and 1st & reverse brake.
NOTICE:
S
Do the test at normal operating fluid temperature 50 to 80 ° C (122 to 176 ° F).
S
Be sure to allow 1 minute interval between tests.
S
Take 3 measurements and take the average value.
(1) Connect an OBD II scan tool or hand − held tester to DLC3.
(2) Fully apply the parking brake.
(3) Start the engine and check idle speed.
Idle speed: 650 ± 50 rpm (In N position and air conditioner OFF)
(4) Shift the shift lever from N to D position. Using a stop watch, measure the time from when the
lever is shifted until the shock is felt.
Time lag: N → D Less than 1.2 seconds
(5) In the same manner, measure the time lag for N → R.
Time lag: N → R Less than 1.5 seconds
Evaluation (If N → D time or N → R time lag is longer than specified):
Problem Possible cause
N
→
D time lag is longer
S
Line pressure too low
S
Forward clutch worn
S O/D one − way clutch not operating
N → R time lag is longer
S Line pressure too low
S Direct clutch worn
S 1st & reverse brake worn
S O/D one − way clutch not operating properly
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