DTC 22
DTC 22: Vehicle Speed Sensor SignalNOTE:
- Information marked with an asterisk (*) applies to CVT model.
- If the MIL indicator is ON, troubleshoot the PGM-FI system first.
- Even though the system is operating normally, the EPS indicator will come on under the following conditions.
Condition 1 (CVT model only):
- The A/T shift lever position is in other than N or P position, then
- The vehicle speed is 0.625 mph (1 km/h) or below and engine is running at 1,900 rpm or above for 90 seconds (DTC 27).
Condition 2:
- When the vehicle speed is 6.2 mph (10 km/h) or above and the engine is running at 280 rpm or below for 3 seconds (DTC 23).
1. Test-drive the vehicle.
Is the speedometer working correctly?
YES - Go to step 2.
NO - Perform the speedometer system troubleshooting.
2. Turn the ignition switch OFF.
3. Disconnect the VSS 3P connector (ECM connector E, 31P) and EPS control unit connector C (20P).
4. Check for continuity between EPS control unit connector C (20P) terminal No. 7 and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between the VSS (ECM) and EPS control unit.
NO - Go to step 5.
5. Connect the VSS 3P connector (ECM connector E, 31P).
6. Block the rear wheels and raise the vehicle, and make sure it is securely supported.
7. Turn the ignition switch ON (II).
8. Shift the transmission into neutral.
9. Block the right front wheel, and slowly rotate the left front wheel and measure the voltage between EPS control unit connector C (20P) terminal No. 7 and body ground.
Does the voltage pulse 0 V and 5 V?
YES - Check for loose wires or poor connections at the EPS control unit connectors. If necessary, substitute a known-good EPS control unit and recheck.
NO - Repair open in the wire between the EPS control unit and VSS (ECM). If the wire is OK, check for a loose VSS (ECM) connector. If necessary, substitute a known-good VSS (ECM), and recheck.