DTC 22

DTC 22: Vehicle Speed Signal

NOTE:
^ If the MIL indicator is ON, troubleshoot the PGM-FI system first.
^ When the engine is running at 2,000 rpm or above and the vehicle speed is 1 mph (1 km/h) or below for 3 minutes, the EPS indicator comes on.

1. Test-drive the vehicle.
Is the vehicle speedometer working correctly?
YES - Go to step 2.
NO - Perform the speedometer system troubleshooting.

2. Turn the ignition switch OFF.
3. Block the front wheels and release the parking brake.
4. Raise the vehicle, and support it with safety stands in the proper locations.
5. Disconnect EPS control unit connector B (14P).





6. Block the right rear wheel, and slowly rotate the left rear wheel and measure the voltage between EPS control unit connector B (14P) terminal No. 2 and body ground.
Does the voltage pulse 0 V and 5 V?
YES - Check for loose EPS control unit connectors. If necessary, substitute a known-good EPS control unit and recheck.
NO - Repair open or short to body ground in the wire between the EPS control unit and body ground, or faulty speedometer.