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Road Test

NOTE: Perform road test to determine if problem is related to a mechanical or electrical component.
  1. With ignition off, disconnect 26-pin harness connector from TCM. The TCM is located under instrument panel next to A/C-heater unit. See Fig 1 .
    Fig 1: Locating Transmission Control Module (TCM)
    G99B50667Courtesy of CHRYSLER CORP.
  2. Road test vehicle. Shift transmission into each gear. Transmission should:
    • Lock when in Park.
    • Back up when in Reverse.
    • Should not move when in Neutral.
    • Provide 1st gear only with shift lever in "1"-"2" position.
    • Operate in 3rd gear only with shift lever in "3" position.
    • Operate in 4th gear (Overdrive) in "D" position.
  3. If transmission operates properly, go to next step. If forward gears were difficult to distinguish (all feel the same), or vehicle would not back-up, see TROUBLE SHOOTING  . DO NOT perform torque converter stall speed test or time lag test.
    CAUTION: Do not overspeed engine when performing downshifts. Release throttle and allow vehicle to slow down before downshifting.
  4. Continue road test. Manually downshift transmission from "D" position to "3" position, and from "3" position to "1-2" position. Manually upshift transmission through forward gears again.
  5. If transmission operates properly, perform torque converter stall speed test, time lag test and hydraulic pressure test. If problem is still present, check electronic control system for stored DTCs. See AISIN WARNER 4 ELECTRONIC CONTROLS article. Once road test is completed, reconnect TCM harness connector.
NOTE: For transmission gear component application, see CLUTCH, BRAKE & BAND APPLICATION  and VALVE BODY SOLENOID APPLICATION  tables.
CLUTCH, BRAKE & BAND APPLICATION

Selector Lever Position (1) Elements In Use
"D" (Drive)
1st Gear OD Direct Clutch, Forward Clutch, OD One-Way Clutch, No. 2 One-Way Clutch
2nd Gear OD Direct Clutch, Forward Clutch, Second Brake, OD One-Way Clutch, No. 1 One-Way Clutch
3rd Gear OD Direct Clutch, Forward Clutch, Direct Clutch, Second Brake, OD One-Way Clutch
4th Gear (OD) Forward Clutch, Direct Clutch, OD Brake, Second Brake
"3" (Third)
1st Gear OD Direct Clutch, Forward Clutch, OD One-Way Clutch, No. 2 One-Way Clutch
2nd Gear OD Direct Clutch, Forward Clutch, Second Coast Brake Band, Second Brake, OD One-Way Clutch, No. 1 One-Way Clutch
3rd Gear OD Direct Clutch, Forward Clutch, Direct Clutch, Second Brake, OD One-Way Clutch
"1"- "2" (Low-Second)
1st Gear OD Direct Clutch, Forward Clutch, First-Reverse Brake, OD One-Way Clutch, No. 2 One-Way Clutch
2nd Gear OD Direct Clutch, Forward Clutch, Second Coast Brake Band, Second Brake, OD One-Way Clutch, No. 1 One-Way Clutch
"R" (Reverse) OD Direct Clutch, Direct Clutch, First-Reverse Brake, OD One-Way Clutch
"N" Or "P" (Neutral Or Park) OD Direct Clutch
(1) No. 1 one-way clutch is located on sun gear and No. 2 one-way clutch is located on rear planetary gear.
VALVE BODY SOLENOID APPLICATION (1)

Selector Position No. 1 Solenoid No. 2 Solenoid
"D" (Drive)
1st Gear ON OFF
2nd Gear ON ON
3rd Gear OFF ON
4th Gear OFF OFF
"3"
1st Gear ON OFF
2nd Gear ON ON
3rd Gear OFF ON
"1"-"2"
1st Gear ON OFF
2nd Gear ON ON
"R" (Reverse) ON OFF
"N" (Neutral) ON OFF
"P" (Park) ON OFF
(1) Valve body contains 3 solenoids. See Figure . No. 1 and 2 valve body solenoids are used for controlling transmission shifts. No. 3 valve body solenoid is used for torque converter lock-up only.
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