Initial Inspection and Diagnostic Overview

TEST

NOTE: Warm up the engine to normal operating temperature (the radiator fan comes on).
1. Apply parking brake and block the wheels. Start the engine, then shift to [D4] position while depressing the brake pedal. Depress the accelerator pedal and release it suddenly. The engine should not stall.
2. Repeat same test in [D3] position.
3. Test-drive the vehicle on a flat road in the [D4] position. Check that the shift points occur at approximate speeds shown on a flat road. Also check for abnormal noise and clutch slippage.

NOTE: Throttle position sensor voltage represents the throttle opening.
a. Unbolt the Powertrain Control Module (PCM) for road testing.

D4 Position: D16Y7 Engine:

D4 Position: D16Y8 Engine:

b. Set the digital multimeter to check the throttle position sensor voltage between PCM terminals:
- C27(+) and B20(-) or B22(-).

NOTE:
- Lock-up ON: The lock-up control solenoid valve A turns ON.
- Lock-up OFF: The lock-up control solenoid valve A turns OFF.

4. Accelerate to about 35 mph (57 km/h) so the transmission is in 4th, then shift from [D4] position to [2] position. The vehicle should immediately begin slowing down from engine braking.

CAUTION: Do not shift from [D4] or [D3] position to [2] position at speeds over 63 mph (100 km/h); you may damage the transmission.

5. Check for abnormal noise and clutch slippage in the following positions.

[2] (2nd Gear) Position
a. Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage.
b. Upshifts and downshifts should not occur with the selector in this position.

[R] (Reverse) Position
Accelerate from a stop at full throttle, and check for abnormal noise and clutch slippage.

6. Test in [P] (Park) Position
Park the vehicle on slope (approximately 16 degrees), apply the parking brake, and shift into [P] position. Release the brake; the vehicle should not move.