DTC U0030-87: Communication Error With Power Window Main Switch [Retractable Hardtop Control Module]: Notes

DTC U0030:87 (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Communication error with power window main switch
Detection condition	The retractable hardtop control module cannot receive a power window open signal during the retractable hardtop operation.
Fail-safe	Stops retractable hardtop operation at fully open position
Possible cause	Short to ground in wiring harness between retractable hardtop control module terminal 4AD and power window main switch terminal 1J Open circuit in wiring harness between retractable hardtop control module terminal 4AD and power window main switch terminal 1J Power window main switch malfunction Retractable hardtop control module malfunction
Courtesy of MAZDA MOTORS CORP.