TROUBLE DIAGNOSES — Symptom Chart
AT-72spec tableUnverifiedSymptom Chart
NOTE
Numbers are arranged in order of probability. Perform inspections starting with number one and working up. Circled numbers indicate that the transmission must be removed from the vehicle.
Automatic transmission symptom × component cross-reference (AT)
48
SymptomEngine does not start in "N", "P" ranges.
Priority numbers per component column [?] — not pixel-confirmed[?]
48
SymptomEngine starts in range other than "N" and "P".
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomTransmission noise in "P" and "N" ranges.
Priority numbers per component column [?] — not pixel-confirmed[?]
48
SymptomVehicle moves when changing into "P" range or parking gear does not disengage when shifted out of "P" range.
Priority numbers per component column [?] — not pixel-confirmed[?]
49
SymptomVehicle runs in "N" range.
Priority numbers per component column [?] — not pixel-confirmed[?]
51
SymptomVehicle will not run in "R" range (but runs in "D", "2" and "1" ranges). Clutch slips. Very poor acceleration.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomVehicle braked when shifting into "R" range.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomSharp shock in shifting from "N" to "D" range.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomVehicle will not run in "D" and "1" ranges (but runs in "1" and "R" range).
Priority numbers per component column [?] — not pixel-confirmed[?]
52
SymptomVehicle will not run in "D", "1", "2" ranges (but runs in "R" range). Clutch slips. Very poor acceleration.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomClutches or brakes slip somewhat in starting.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomExcessive creep.
Priority numbers per component column [?] — not pixel-confirmed[?]
51, 52
SymptomNo creep at all.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomFailure to change gear from "D₁" to "D₂".
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomFailure to change gear from "D₂" to "D₃".
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomFailure to change gear from "D₃" to "D₄".
Priority numbers per component column [?] — not pixel-confirmed[?]
54, 55, 56
SymptomToo high a gear change point from "D₁" to "D₂", "D₂" to "D₃", "D₃" to "D₄".
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomGear change directly from "D₁" to "D₃" occurs.
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomEngine stops when shifting lever into "R", "D", "2" and "1".
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomToo sharp a shock in change from "D₁" to "D₂".
Priority numbers per component column [?] — not pixel-confirmed[?]
—
SymptomToo sharp a shock in change from "D₂" to "D₃".
Priority numbers per component column [?] — not pixel-confirmed[?]
Each symptom row lists priority numbers (1 = check first, n = check last) per component column. Plain numbers = on-vehicle inspection; circled numbers = transmission must be removed. Columns are split into ON vehicle / OFF vehicle groups.
See also
AT-7Control Valve Assembly and Accumulators InspectionAT-9ON-VEHICLE SERVICEAT-14TROUBLE DIAGNOSES — Preliminary Check / A/T Fluid CheckAT-48TROUBLE DIAGNOSESAT-49TROUBLE DIAGNOSES — Diagnostic Procedure 4AT-51TROUBLE DIAGNOSES — Diagnostic Procedure 6AT-52TROUBLE DIAGNOSES — Diagnostic Procedure 7AT-54TROUBLE DIAGNOSES — Diagnostic Procedure 9AT-55TROUBLE DIAGNOSES — Diagnostic Procedure 10AT-56TROUBLE DIAGNOSES — Diagnostic Procedure 11AT-66TROUBLE DIAGNOSES — Electrical Components Inspection (Cont'd)AT-67TROUBLE DIAGNOSES — Electrical Components Inspection (Cont'd)AT-70TROUBLE DIAGNOSES — Final Check (Cont'd) — PRESSURE TESTING
AT-80 · AT-91 · AT-96 · AT-114 · AT-116 · AT-120 · AT-124 · AT-127 · AT-134