Cruise control cannot be set

Diagnostic procedure

1. Check horn operation.
2. Check the cruise control combination switch.
3. Test the brake pedal position switch and check its adjustment.
4. M/T model: Test the clutch pedal position switch and check its adjustment.
5. Do the cruise control unit input test.
6. Check for continuity between engine control module (ECM)/powertrain control module (PCM) connector terminal E26 and cruise control unit 14P connector terminal No. 12.
7. If there is continuity, replace the ECM/PCM.
8. If there is no continuity, repair open or short in the wire.

Also check for

- Blown No. 13 (20 A) fuse in the under-hood fuse/relay box
- Blown No. 18 (15 A) fuse in the under-dash fuse/relay box
- Poor ground: G202, G506
- Faulty horn relay
- Faulty security horn relay
- Faulty ECM/PCM
- Open circuit, loose or disconnected terminals: GRN/YEL, GRN, RED, GRN (LHD), LT GRN (RHD), PNK, GRY (LHD), BLK/RED (RHD), BLU, BLK, LT BLU (M/T), PNK (A/T)