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 AUTOMATIC TRANSAXLE SYMPTOM TROUBLESHOOTING [JA5AX-EL]

AUTOMATIC TRANSAXLE SYMPTOM TROUBLESHOOTING [JA5AX-EL]


id050305817700

Diagnostic Index

• Use the chart below to verify the symptoms of the trouble in order to diagnose the appropriate area.

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

1
• Vehicle does not move in D range, or in R position
• Vehicle does not move when accelerator pedal depressed.
2
• Vehicle moves in N position
• Vehicle creeps in N position.
• Vehicle creeps if brake pedal not depressed in N position.
3
• Vehicle moves in P position, or parking gear does not disengage when P is disengaged
• Vehicle rolls when on a downward slope and tires do not lock in P position.
• Tires locked when P disengaged, vehicle does not move in D range, and R position when accelerator pedal depressed, and engine remains in stall condition.
4
• Excessive creep
• Vehicle accelerates in D range, and R position without depressing accelerator pedal.
5
• No creep at all
• Vehicle does not move in D range, or R position when idling on flat paved road.
6
• Low maximum speed and poor acceleration
• Vehicle acceleration poor at start.
• Delayed acceleration when accelerator pedal depressed while driving.
7
• No shifting
• Single shift range only.
• Sometimes it shifts correctly.
8
• Does not shift to fifth gear (5GR)
• Vehicle does not upshift from 4GR to 5GR even though vehicle speed increased.
• Vehicle does not shift to 5GR even though accelerator pedal released in D range at 60 km/h {37 mph}.
9
• Abnormal shifting
• Shifts incorrectly (incorrect shift pattern).
10
• Frequent shifting
• Downshifting occurs immediately even when accelerator pedal depressed slightly in D range.
11
• Shift point is high or low
• Shift point considerably different from automatic shift diagram.
• Shift delays when accelerating.
• Shift occurs quickly when accelerating and engine speed does not increase.
12
• Torque converter clutch (TCC) non-operation
• TCC does not operate when vehicle reaches TCC operation range.
13
• No kickdown
• Does not downshift when accelerator pedal fully depressed within kickdown range.
14
• Engine flares up or slips when upshifting or downshifting
• When accelerator pedal depressed for driveway, engine speed increases but vehicle speed increase slowly.
• When accelerator pedal depressed while driving, engine speed increases but vehicle speed does not increase.
15
• Engine flares up or slips when accelerating vehicle
• Engine flares up when accelerator pedal depressed for upshifting.
• Engine flares up suddenly when accelerator pedal depressed for downshifting.
16
• Judder upon torque converter clutch (TCC) operation
• Vehicle jolts when TCC engaged.
17
• Excessive shift shock from N to D or N to R position/range
• Strong shock felt when shifting from N to D or N to R position/range at idle.
18
• Excessive shift shock is given when upshifting and downshifting
• Excessive shift shock felt when depressing accelerator pedal to accelerate at upshifting.
• During cruising, excessive shift shock felt when depressing accelerator pedal at downshifting.
19
• Excessive shift shock on torque converter clutch (TCC)
• Strong shock felt when TCC engaged.
20
• Noise occurs at idle when vehicle is stopped in all positions/ranges
• Transaxle noisy in all positions and ranges when vehicle idling.
21
• Noise occurs at idle when vehicle is stopped in D range, or in R position
• Transaxle noisy in driving ranges when vehicle idling.
22
• No engine braking in 1GR position of M range
• Engine speed drops to idle but vehicle coasts when accelerator pedal released during cruising at medium to high speeds.
• Engine speed drops to idle but vehicle coasts when accelerator pedal released when in M range (1GR) at low vehicle speed.
23
• Transaxle overheats
• Burnt smell emitted from transaxle.
• Smoke emitted from transaxle.
24
• Engine stalls when shifted to D range, or in R position
• Engine stalls when shifting from N or P position to D range or R position at idle.
25
• Engine stalls when driving at slow speeds or stopping
• Engine stalls when brake pedal depressed while driving at low speed or stopping.
26
• Starter does not work
• Starter does not work even when P or N position selected.
27
• Gear position indicator light does not illuminate in M range
• Gear position indicator light in instrument cluster does not illuminate in M range and ignition switch at on.
28
• Gear position indicator light illuminates in D range or P, N, R positions
• Gear position indicator light in instrument cluster illuminates in D range or P, N, R positions and ignition switch at on.
29
• Does not shift up in M range
• Gear position indicator light in instrument cluster illuminates but vehicle does not upshift when selector lever is pushed to "+" side.
30
• Does not shift down in M range
• Gear position indicator light in instrument cluster illuminates but vehicle does not downshift when selector lever is pushed to "-" side.

Quick Diagnosis Chart