DTC 23
DTC 23: Engine Speed 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 is in a position other than [N] or [P] then
- After the vehicle (or the vehicle speed sensor signal) has stopped for at least 10 seconds, yet the engine speed was still 1,900 rpm or higher for at least 20 seconds.
Condition 2:
- When the vehicle speed is 6.2 mph (10 km/h) or higher, and the engine is running at 280 rpm or below for 3 seconds (DTC 23).
1. Start the engine and check the tachometer.
Is the tachometer working correctly?
YES - Go to step 2.
NO - Perform the tachometer troubleshooting. If the tachometer is OK, go to step 2.
2. Turn the ignition switch OFF, and disconnect EPS control unit connector (20P).
3. Start the engine, and let it idle.
4. Measure the voltage between EPS control unit connector C (20P) terminal No. 19 and body ground.
Is there about 6V at idle?
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 the ECM.