Road Test

NOTE: If shift lever cannot be moved from "P" position with brake pedal depressed and accelerator pedal at idle position, check shift interlock system. See MPWA ELECTRONIC CONTROLS article.

Warm engine to normal operating temperature. Apply parking brake and block wheels. Start engine. Move shift lever to "D4" while depressing brake pedal. Depress accelerator pedal and release it suddenly. Engine should not stall.
Repeat step 1 in "D3" 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.
Ensure ignition is off. Remove door sill molding on passengers side and remove small cover on right kick panel. Pull carpet on floorboard back for access to Engine Control Module (ECM), mounted on the floorboard. This is the ECM for fuel injection system.
Remove ECM cover located above ECM. Disconnect electrical connectors from ECM. Install Test Harness (07LAJ-PT3010A) between ECM and ECM electrical connectors. See Fig 1.
Install Digital Volt-Ohmmeter (DVOM) on test harness with positive lead at terminal D11 and negative lead at terminal D22. Terminal numbers are on top of test harness. See Fig 1. Ensure digital volt-ohmmeter is set for measuring voltage.
Road test vehicle and check for abnormal noise and clutch slippage. Specified clutch is applied in designated gears. See CLUTCH APPLICATION table.
Note that shift points and lock-up clutch operation are within specification in accordance with throttle position sensor voltage. See TRANSAXLE UPSHIFT SPECIFICATIONS (MPH) and TRANSAXLE DOWNSHIFT SPECIFICATIONS (MPH) tables.
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.
CAUTION: DO NOT shift from "D4" to "2" position at speeds greater than 62 MPH or transaxle may be damaged.
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 range.
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 range.
Place shift lever in "R" position. Accelerate from a stop at full throttle. Check for abnormal noise or clutch slippage.
Park vehicle on a slope. Apply parking brake and 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.
Ensure ignition is off. Remove test harness. Reinstall electrical connectors, ECM cover, carpet and door sill molding.

Fig 1: Installing Test Harness At PGM-FI ECU

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CLUTCH APPLICATION

Shift Lever Position

Elements In Use

Park & Neutral

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.

TRANSAXLE UPSHIFT SPECIFICATIONS (MPH)

"D4" Position & Condition	1st-2nd Gear	2nd-3rd Gear	3rd-4th Gear	Lock-Up Clutch On
TPS Voltage .753 Volt	10-13	17-20	28-33	21-25
TPS Voltage 2.272 Volts	19-23	31-36	45-51	65-74
TPS Voltage 4.55 Volts (Full Throttle)	36-41	63-72	101-112	93-104

TRANSAXLE DOWNSHIFT SPECIFICATIONS (MPH)

Shift Lever Position

Lock-Up Clutch Off

4th-3rd Gear

3rd-2nd Gear

2nd-1st Gear

TPS Voltage .753 Volt

17-20

19-22

6-10

TPS Voltage 2.272 Volts

48-54

⁽¹⁾

TPS Voltage 2.272 Volts (Full Throttle)

81-91

87-98

53-60

26-32

⁽¹⁾	Specification not available from manufacturer.