DTC 15: TCL Mode Switch Failure
NOTE:
DTC 15 is set when an ON signal is input simultaneously from both ON and OFF positions of switch due to shorted TCL mode switch circuit.
Disconnect TCL mode switch connector. Inspect switch operation. See TCL MODE SWITCH under COMPONENT TESTING. Replace switch as needed. If switch is okay, check continuity of circuits between TCL module and switch. See WIRING DIAGRAMS . Inspect and repair circuits as needed. If continuity exists in both circuits, replace TCL module.