EPS (Electrical Power Steering) Components

DTC 21: Voltage for IG1
1. Check the No. 5 (7.5 A) fuse in the 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. 5 (7.5 A) fuse is blown.

Is the fuse OK?

YES - Go to step 2.

NO - Replace the fuse and recheck.

2. Disconnect EPS control unit connector B (14P).
3. Turn the ignition switch to ON (II).
4. Measure the voltage between EPS control unit connector B (14P) terminal No. 1 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.

NO - Check for an open in the wire between the under-dash fuse/relay box and the 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.