Road Test
NOTE:
If road test is performed with engine coolant temperature less than 158°F (70°C), shift speeds will be delayed during light throttle application and occur at a slightly higher speed. When TECH 1 scan tool is connected to data link connector, maximum line pressure will be obtained, resulting in harsh shifts.
NOTE:
Engine coolant temperature must be greater than 158°F (70°C) for TCC operation. The TCC operates in 2nd gear kickdown when engine coolant temperature is greater than 158°F (70°C). TCC operates in 2nd, 3rd and 4th gear when transmission fluid temperature is greater than 284°F (140°C).
- If a stored diagnostic trouble code is present, clear diagnostic trouble codes from control module memory. See CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTICS SYSTEM in appropriate HYDRA-MATIC 4L30-E ELECTRONIC CONTROLS article.
- Start and warm engine to normal operating temperature. Road test vehicle and check for abnormal noise, clutch slippage and shift firmness. Specified clutch and brake are applied in designated gear. See CLUTCH & BAND APPLICATION
table.
- Ensure upshift and downshift speeds are correct in relation to throttle opening and position of POWER or WINTER mode switches mounted on center console, near gearshift lever. See appropriate UPSHIFT SPECIFICATIONS and DOWNSHIFT SPECIFICATIONS tables.
- Ensure Torque Converter Clutch (TCC) operation is correct to gear application in relation to throttle opening with shift lever in "D" position. See appropriate TCC SPECIFICATIONS table under TRANSMISSION TESTING
.
- During road test, if CHECK TRANS light on instrument panel starts flashing, a diagnostic trouble code is stored in control module memory. Check stored diagnostic trouble code and repair as necessary.
- During road test, if a problem is present, but CHECK TRANS light on instrument panel did not flash, turn engine off. Disconnect control module harness connectors. See Figure
or Figure
.
- Repeat road test, while manually shifting the transmission. With shift lever in "L" position, transmission should remain in 1st gear. With shift lever in "2" position, transmission should remain in 3rd gear. With shift lever in "3" or "D" position, transmission should remain in 4th gear. Shut engine off. Reconnect control module harness connectors.
- If problem is still present, see SYMPTOM DIAGNOSIS
under TROUBLE SHOOTING. If problem is not present with harness connectors disconnected at control module, check wiring connections and control module ground circuits.
CLUTCH & BAND APPLICATION
| Shift Lever Position |
Elements In Use |
| "P" |
Overrun Clutch |
| "R" |
OD Roller Clutch, Overrun Clutch, Reverse Clutch & Sprag Assembly |
| "N" |
Overrun Clutch |
| "D" |
| 1st Gear |
OD Roller Clutch, Overrun Clutch, Sprag Assembly & Brake Band |
| 2nd Gear |
OD Roller Clutch, Overrun Clutch, 2nd Clutch & Brake Band |
| 3rd Gear |
OD Roller Clutch, Overrun Clutch, 3rd Clutch & 2nd Clutch |
| 4th Gear |
2nd Clutch, 3rd Clutch & 4th Clutch |
| "3" |
| 1st Gear |
OD Roller Clutch, Overrun Clutch, Sprag Assembly & Brake Band |
| 2nd Gear |
OD Roller Clutch, Overrun Clutch, 2nd Clutch & Brake Band |
| 3rd Gear |
OD Roller Clutch, Overrun Clutch, 3rd Clutch & 2nd Clutch |
| "2" |
| 1st Gear |
OD Roller Clutch, Overrun Clutch, 3rd Clutch, Sprag Assembly & Brake Band |
| 2nd Gear |
OD Roller Clutch, Overrun Clutch, 2nd Clutch & Brake Band |
| "L" |
| 1st Gear |
OD Roller Clutch, Overrun Clutch, 3rd Clutch, Sprag Assembly & Brake Band |
TCC SPECIFICATIONS (1995 PASSPORT & RODEO)
| Shift Mode & Gear Range |
MPH |
| TCC ON |
| Normal |
| 2nd |
47-50 |
| 3rd |
34-38 |
| 4th |
40-45 |
| Power |
| 2nd |
47-50 |
| 3rd |
50-53 |
| 4th |
50-53 |
| TCC OFF |
| Normal |
| 2nd |
43-47 |
| 3rd |
29-33 |
| 4th |
37-41 |
| Power |
| 2nd |
43-47 |
| 3rd |
44-48 |
| 4th |
47-50 |
TCC SPECIFICATIONS (1995 TROOPER)
| Shift Mode & Gear Range |
MPH |
| TCC ON |
| Normal |
| 2nd |
45-48 |
| 3rd |
33-37 |
| 4th |
39-43 |
| Power |
| 2nd |
45-49 |
| 3rd |
48-52 |
| 4th |
48-52 |
| TCC OFF |
| Normal |
| 2nd |
42-45 |
| 3rd |
28-32 |
| 4th |
36-40 |
| Power |
| 2nd |
42-45 |
| 3rd |
42-46 |
| 4th |
45-48 |
TCC SPECIFICATIONS (1996 PASSPORT & RODEO)
| Shift Mode & Gear Range |
MPH |
| TCC ON |
| Normal |
| 2nd |
49-53 |
| 3rd |
36-40 |
| 4th |
43-47 |
| Power |
| 2nd |
49-53 |
| 3rd |
52-56 |
| 4th |
52-56 |
| TCC OFF |
| Normal |
| 2nd |
46-50 |
| 3rd |
30-34 |
| 4th |
40-44 |
| Power |
| 2nd |
46-50 |
| 3rd |
47-51 |
| 4th |
50-54 |
TCC SPECIFICATIONS (1996 SLX & TROOPER)
| Shift Mode & Gear Range |
MPH |
| TCC ON |
| Normal |
| 2nd |
45-48 |
| 3rd |
33-37 |
| 4th |
48-52 |
| Power |
| 2nd |
45-48 |
| 3rd |
48-52 |
| 4th |
48-52 |
| TCC OFF |
| Normal |
| 2nd |
42-45 |
| 3rd |
28-32 |
| 4th |
45-49 |
| Power |
| 2nd |
42-45 |
| 3rd |
42-46 |
| 4th |
45-48 |
UPSHIFT SPECIFICATIONS (1995-96 PASSPORT & RODEO)
| Shift Lever Position |
1st-2nd MPH |
2nd-3rdMPH |
3rd-4th MPH |
| Normal Mode |
| "D" |
| Full Throttle |
32-35 |
64-68 |
96-99 |
| Half Throttle |
21-24 |
37-41 |
62-66 |
| "3" |
| Full Throttle |
32-35 |
64-68 |
N/A |
| Half Throttle |
21-24 |
37-41 |
N/A |
| "2" |
| Full Throttle |
32-35 |
N/A |
N/A |
| Half Throttle |
21-24 |
N/A |
N/A |
| Power Mode |
| "D" |
| Full Throttle |
32-35 |
64-68 |
109-113 |
| Half Throttle |
24-28 |
48-52 |
80-84 |
| "3" |
| Full Throttle |
32-35 |
64-68 |
N/A |
| Half Throttle |
24-28 |
48-52 |
N/A |
| "2" |
| Full Throttle |
32-35 |
N/A |
N/A |
| Half Throttle |
24-28 |
N/A |
N/A |
UPSHIFT SPECIFICATIONS (1995 TROOPER)
| Shift Lever Position |
1st-2nd MPH |
2nd-3rd MPH |
3rd-4th MPH |
| Normal Mode |
| "D" |
| Full Throttle |
30-34 |
62-66 |
92-96 |
| Half Throttle |
20-24 |
36-40 |
60-64 |
| "3" |
| Full Throttle |
30-34 |
62-66 |
N/A |
| Half Throttle |
20-24 |
36-40 |
N/A |
| "2" |
| Full Throttle |
30-34 |
N/A |
N/A |
| Half Throttle |
20-24 |
N/A |
N/A |
| Power Mode |
| "D" |
| Full Throttle |
30-34 |
62-66 |
105-109 |
| Half Throttle |
23-27 |
46-50 |
77-81 |
| "3" |
| Full Throttle |
30-34 |
62-66 |
N/A |
| Half Throttle |
23-27 |
46-50 |
N/A |
| "2" |
| Full Throttle |
30-34 |
N/A |
N/A |
| Half Throttle |
23-27 |
N/A |
N/A |
UPSHIFT SPECIFICATIONS (1996 SLX & TROOPER)
| Shift Lever Position |
1st-2ndMPH |
2nd-3rd MPH |
3rd-4th MPH |
| Normal Mode |
| "D" |
| Full Throttle |
24-28 |
50-54 |
81-85 |
| Half Throttle |
18-22 |
36-40 |
70-74 |
| "3" |
| Full Throttle |
30-34 |
62-66 |
N/A |
| Half Throttle |
20-24 |
36-40 |
N/A |
| "2" |
| Full Throttle |
30-34 |
N/A |
N/A |
| Half Throttle |
20-24 |
N/A |
N/A |
| Power Mode |
| "D" |
| Full Throttle |
27-31 |
52-56 |
82-86 |
| Half Throttle |
23-27 |
45-49 |
78-82 |
| "3" |
| Full Throttle |
30-34 |
62-66 |
N/A |
| Half Throttle |
23-27 |
46-50 |
N/A |
| "2" |
| Full Throttle |
30-34 |
N/A |
N/A |
| Half Throttle |
23-27 |
N/A |
N/A |
DOWNSHIFT SPECIFICATIONS
| Shift Lever Position |
4th-3rd MPH |
3rd-2ndMPH |
2nd-1st MPH |
| Normal Mode |
| "D" |
| Full Throttle |
90-94 |
56-60 |
25-29 |
| Half Throttle |
43-47 |
22-26 |
10-14 |
| Closed Throttle |
17-21 |
10-14 |
8-12 |
| "3" |
| Full Throttle |
N/A |
56-60 |
25-29 |
| Half Throttle |
N/A |
22-26 |
10-14 |
| Closed Throttle |
N/A |
10-14 |
8-12 |
| "2" |
| Full Throttle |
N/A |
61-65 |
26-30 |
| Half Throttle |
N/A |
61-65 |
10-14 |
| Closed Throttle |
N/A |
53-57 |
8-12 |
| Power Mode |
| "D" |
| Full Throttle |
103-107 |
58-62 |
26-30 |
| Half Throttle |
63-67 |
34-38 |
14-17 |
| Closed Throttle |
30-33 |
16-19 |
8-12 |
| "3" |
| Full Throttle |
N/A |
58-62 |
26-30 |
| Half Throttle |
N/A |
34-38 |
14-17 |
| Closed Throttle |
N/A |
16-19 |
8-12 |
| "2" |
| Full Throttle |
N/A |
61-65 |
26-30 |
| Half Throttle |
N/A |
61-65 |
14-17 |
| Closed Throttle |
N/A |
53-57 |
8-12 |
DOWNSHIFT SPECIFICATIONS
| Shift Lever Position |
4th-3rd MPH |
3rd-2nd MPH |
2nd-1st MPH |
| Normal Mode |
| "D" |
| Full Throttle |
87-91 |
54-58 |
24-28 |
| Half Throttle |
42-46 |
21-25 |
9-13 |
| Closed Throttle |
17-20 |
9-13 |
8-12 |
| "3" |
| Full Throttle |
N/A |
54-58 |
24-28 |
| Half Throttle |
N/A |
21-25 |
9-13 |
| Closed Throttle |
N/A |
9-13 |
8-12 |
| "2" |
| Full Throttle |
N/A |
59-63 |
25-29 |
| Half Throttle |
N/A |
59-63 |
9-13 |
| Closed Throttle |
N/A |
51-55 |
8-12 |
| Power Mode |
| "D" |
| Full Throttle |
100-104 |
56-60 |
25-29 |
| Half Throttle |
61-65 |
33-37 |
13-17 |
| Closed Throttle |
29-32 |
15-19 |
8-12 |
| "3" |
| Full Throttle |
N/A |
56-60 |
25-29 |
| Half Throttle |
N/A |
33-37 |
13-17 |
| Closed Throttle |
N/A |
15-19 |
8-12 |
| "2" |
| Full Throttle |
N/A |
59-63 |
25-29 |
| Half Throttle |
N/A |
59-63 |
13-17 |
| Closed Throttle |
N/A |
51-55 |
8-12 |
DOWNSHIFT SPECIFICATIONS
| Shift Lever Position |
4th-3rd MPH |
3rd-2nd MPH |
2nd-1st MPH |
| Normal Mode |
| "D" |
| Full Throttle |
69-73 |
44-48 |
9-13 |
| Half Throttle |
40-44 |
20-24 |
14-18 |
| Closed Throttle |
17-21 |
12-16 |
8-12 |
| "3" |
| Full Throttle |
N/A |
54-58 |
24-28 |
| Half Throttle |
N/A |
21-25 |
9-13 |
| Closed Throttle |
N/A |
9-13 |
8-12 |
| "2" |
| Full Throttle |
N/A |
59-63 |
25-29 |
| Half Throttle |
N/A |
59-63 |
9-13 |
| Closed Throttle |
N/A |
51-55 |
8-12 |
| Power Mode |
| "D" |
| Full Throttle |
74-78 |
46-50 |
19-23 |
| Half Throttle |
58-62 |
31-35 |
13-17 |
| Closed Throttle |
28-32 |
14-18 |
8-12 |
| "3" |
| Full Throttle |
N/A |
56-60 |
25-29 |
| Half Throttle |
N/A |
33-37 |
13-17 |
| Closed Throttle |
N/A |
15-19 |
8-12 |
| "2" |
| Full Throttle |
N/A |
59-63 |
25-29 |
| Half Throttle |
N/A |
59-63 |
13-17 |
| Closed Throttle |
N/A |
51-55 |
8-12 |