ROAD TEST
BHE051301026W03
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Warning
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• When performing a road test, be aware of other vehicles, people, impediments to avoid an accident.
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Note
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• When the legal speed limit must be exceeded, use a chassis dynamomenter instead of performing a road test.
Road Test Preparation
1. Inspect the engine coolant level. (See ENGINE COOLANT LEVEL INSPECTION.)
2. Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION.)
3. Inspect the ATF level. (See Automatic Transmission Fluid (ATF) Level Inspection.)
4. Inspect the idle speed and ignition timing in the P position. (See ENGINE TUNE-UP.)
5. Wait until the engine and transmission reach normal operating temperature.
Shift Diagram
D range (normal mode)
D Range Test
1. Perform road test preparation. (See Road Test Preparation.)
2. Shift the selector lever to the D range.
3. Accelerate with the throttle half and then wide open.
4. Verify that 1→ 2, 2→ 3, and 3→ 4 upshifts can be obtained. The shift points must be as shown in the table below.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
5. Drive the vehicle in 4GR, 3GR, and 2GR and verify that kickdown occurs for 4→ 3, 3→ 2, 2→ 1 downshifts, and that the shift points are as shown in the table below.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
6. Decelerate the vehicle and verify that engine braking effect is felt in 2GR, 3GR, and 4GR.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
7. Drive the vehicle and verify that TCC operation is obtained. The operation points must be as shown in the table below.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
Shift point table
|
Range
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Mode
|
Throttle condition
|
Shift
|
Vehicle speed
(km/h {mph})
|
Turbine speed
(rpm)
|
|
D
|
NORMAL
|
Wide open
|
D1→ D2
|
59-65 {37-40}
|
5,950-6,550
|
|
D2→ D3
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109-117 {68-72}
|
6,100-6,500
|
|
D3→ D4
|
165-175 {103-108}
|
6,000-6,300
|
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TCC ON (D4)
|
175-185 {109-114}
|
4,400-4,600
|
|
Half open
|
D1→ D2
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41-49 {26-30}
|
4,100-5,000
|
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D2→ D3
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67-85 {42-52}
|
3,750-4,750
|
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TCC ON (D3)
|
92-104 {58-64}
|
3,350-3,750
|
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D3→ D4
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112-139 {70-86}
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4,050-5,050
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TCC ON (D4)
|
125-152 {78-94}
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3,150-3,800
|
|
Closed
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D4→ D3
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27-33 {17-20}
|
700-800
|
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D3→ D1
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5-11 {4-6}
|
200-350
|
|
Kickdown
|
D4→ D3
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150-160 {93-99}
|
3,800-4,000
|
|
D3→ D2
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98-106 {61-65}
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3,550-3,800
|
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D2→ D1
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44-50 {28-31}
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2,500-2,750
|
|
POWER
|
Wide open
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D1→ D2
|
59-65 {37-40}
|
5,950-6,550
|
|
D2→ D3
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109-117 {68-72}
|
6,100-6,500
|
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D3→ D4
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165-175 {103-108}
|
6,000-6,300
|
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TCC ON (D4)
|
175-185 {109-114}
|
4,400-4,600
|
|
Half open
|
D1→ D2
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41-49 {26-30}
|
4,100-5,000
|
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D2→ D3
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86-98 {53-60}
|
4,800-5,500
|
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TCC ON (D3)
|
92-104 {58-64}
|
3,350-3,750
|
|
D3→ D4
|
139-160 {87-99}
|
5,050-5,800
|
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TCC ON (D4)
|
125-152 {78-94}
|
3,150-3,800
|
|
Closed
|
D4→ D3
|
57-63 {36-39}
|
1,450-1,550
|
|
D3→ D1
|
5-11 {4-6}
|
200-350
|
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Kickdown
|
D4→ D3
|
150-160 {93-99}
|
3,800-4,000
|
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D3→ D2
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98-106 {61-65}
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3,550-3,800
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D2→ D1
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44-50 {28-31}
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2,500-2,750
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M Range Test
1. Perform road test preparation. (See Road Test Preparation.)
2. Shift the selector lever to M range.
3. Verify that 1→ 2, 2→ 3, and 3→ 4 upshifts and 4→ 3, 3→ 2, and 2→ 1 downshifts are obtained by manual shifting.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
4. Decelerate the vehicle and verify that 4→ 3, 3→ 1, and 2→ 1 downshifts are obtained. The shift points must be as shown in the table below.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
5. Decelerate the vehicle and verify that engine braking effect is felt in all gears.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
6. Drive the vehicle and verify that TCC operation is obtained in 4GR. The operation points must be as shown in the table below.
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• If there is any malfunction, inspect the TCM and AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
Vehicle speed at shift point table
|
Range
|
Mode
|
Shift
|
Vehicle speed
km/h {mph}
|
Turbine speed
(rpm)
|
|
M
|
Manual
|
M4→ M3
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28-34 {18-21}
|
750-850
|
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M3→ M1
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5-11 {4-6}
|
200-350
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P Position Test
1. Shift into the P position on a gentle slope. Release the brake, and verify that the vehicle does not roll.
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• If there is any malfunction, inspect the AT. (See SYMPTOM TROUBLESHOOTING ITEM TABLE.)
Incorrect Gear Ratio (Slippage) Test
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Note
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• If a gear ratio is incorrect but is not detected accurately, it will not be output as a DTC. In order to be output, after shifting into each gear position, the gear position must be held while the vehicle is driven at a speed of 10 km/h {6.2 mph} or more for at least 7 s.
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• An incorrect gear ratio refers to a situation in which, due to clutch slippage in the AT, the input and output rotation of the AT differs from a certain value.
1. Perform road test preparation. (See Road Test Preparation.)
2. Perform the following steps.
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(1) Shift into the D range (1GR) and drive for 7 s or more.
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(2) Shift into the D range (2GR) and drive for 7 s or more.
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(3) Shift into the D range (3GR) and drive for 7 s or more.
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(4) Shift into the D range (4GR) and drive for 7 s or more.
3. Stop the vehicle.
4. Inspect for a DTC.
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• If any DTC is present, repair according to the inspection procedure for the applicable DTC.