Inspection Procedure

Check mark display. (To examine whether air conditioner screen is displayed with air conditioner SW.)
1. NG: Go to step 4 .
2. OK: Go to next step.
Display check mode. (Vehicle signal check mode: IG)
1. NG: Replace or repair speed sensor and wire harness.
2. OK: Go to next step.
Display check mode. (Panel switch check, A/C-related switch check.)
1. NG: Replace multi display.
2. OK: Check gateway system. (A/C ECU communication circuit) (See page DI-1363)
Check "AVC-LAN communication circuit" See AVC-LAN (COMMUNICATION BUS) CIRCUIT .
CHECK:

Check continuity of the wire harness between the gateway ECU and the radio and player.

OK: Continuity
1. NG: Replace or repair AVC-LAN circuit.
2. OK: Check gateway system. (A/C ECU communication circuit)