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Home › Acura › 1994 › Integra GS-R, 4D Sedan › Repair and Diagnosis › Transmission › Automatic Trans › Overhaul - Mp7A › Testing › Road Test

Road Test

NOTE: If shift lever cannot be moved from "P" position with brake pedal depressed and accelerator at idle position, check shift interlock system. See MP7A ELECTRONIC CONTROLS article.
  1. Warm engine to normal operating temperature. Apply parking brake, and block wheels. Start engine. Move shift lever to "D4" position while depressing brake pedal. Depress accelerator pedal and release it suddenly. Engine should not stall.
  2. Repeat step 1) with shift lever in "D" position. Ensure engine does not stall. Manufacturer recommends monitoring of throttle position sensor voltage when performing road test to ensure proper throttle opening for verifying shift points and lock-up of torque converter.
  3. Remove door scuff plate from passenger's side door opening and passenger's side kick panel for access to Engine Control Module (ECM), mounted on kick panel area. See Fig 1. Remove ECM cover, located above ECM.
  4. Ensure ignition is off. Disconnect electrical connectors from ECM and install Test Harness (07LAJ-PT3010A) between electrical connectors and ECM. See Fig 1.
  5. Connect digital multimeter to terminals D11 (+) and D22 (-) on test harness for monitoring of throttle position sensor voltage. See Fig 1.
  6. Road test vehicle and check for abnormal noise and clutch slippage. See CLUTCH APPLICATION  table for clutch engagement.
  7. Ensure upshift and downshift points and lock-up of torque converter are correct in relation to throttle position sensor voltage or throttle opening and vehicle speed. See Fig 2.
  8. With shift lever in "D4" position, accelerate to about 35 MPH so transaxle is in 4th gear. Move shift lever to "2" position. Ensure engine braking occurs.
  9. Place shift lever in "1" position. Accelerate from a stop at full throttle. Check for abnormal noise or clutch slippage. Upshifts and downshifts should not occur in this shift lever position.
  10. Place shift lever in "2" position. Accelerate from a stop at full throttle. Check for abnormal noise or clutch slippage. Upshifts and downshifts should not occur in this shift lever position.
  11. Place shift lever in "R" position. Accelerate from a stop at full throttle. Check for abnormal noise or clutch slippage.
  12. Park vehicle on a slope. Apply parking brake. Place shift lever in "P" position. Release parking brake. Ensure vehicle does not move. If vehicle moves, check for defective shift cable or parking components.
  13. Ensure ignition is off. Remove test harness and reinstall ECM cover, carpet and door scuff plate.
CLUTCH APPLICATION

Shift Lever Position Elements In Use
"P" Or "N" No Clutches Are Applied
"R" 4th Clutch
"D4"
1st Gear 1st Clutch
2nd Gear (1) 2nd Clutch
3rd Gear (1) 3rd Clutch
4th Gear (1) 4th Clutch
"D"
1st Gear 1st Clutch
2nd Gear (1) 2nd Clutch
3rd Gear (1) 3rd Clutch
"2" (1) 2nd Clutch
"1" 1st-Hold Clutch & 1st Clutch
(1) The 1st clutch engages, but driving power is not transmitted, as one-way clutch slips.
Fig 1: Identifying ECM & Installing Test Harness
G95H19304Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Upshift & Downshift Specifications
G95I19305Courtesy of AMERICAN HONDA MOTOR CO., INC.
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