IG KEY OFF.
Disconnect Mode switch connector.
Measure resistance between one and the other terminal of mode switch connector.
Is the measured value within specification ?
![]()  | ▶ Check TCCM connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.  | 
![]()  | ▶ Substitute with a known good Mode Switch and check for proper operation. If the problem is corrected, replace Mode Switch and then go to "Verification of Vehicle Repair" procedure  |