DTC Troubleshooting: 21

DTC 21:  Voltage For IG1


1.Check the No. 10 (7.5A) fuse in the driver's under-dash fuse/relay box, and reinstall the fuse if it is OK.

NOTE: All indicators except the charging system indicator will not come on when the No. 21 (7.5A) fuse is blown.

Is the fuse OK?


YES - Go to 2.


NO - Replace the fuse and recheck.n


2.Disconnect EPS control unit connector C (13P).

3.Turn the ignition switch ON (II).

4.Measure the voltage between EPS control unit connector C (13P) terminal No. 6 and body ground.

Is there battery voltage?


YES - Check for loose EPS control unit connectors. If necessary, substitute a known-good  EPS control unit and recheck.n


NO - Check for an open in the wire between under-dash fuse/relay box and EPS control unit, and repair it if necessary. If the wire is OK, check for an open circuit inside the under-dash fuse/relay box.n