Fig. 1: Testing A/C & Blower Switch
Courtesy of MAZDA MOTORS CORP.
A/C RELAY
1. Remove relay. Check continuity between specified terminals of relay connector. See A/C RELAY TEST
table. See Fig. 2 . Ensure test lead polarity is correct. If continuity is not as specified, replace relay.
2. If continuity is as specified, apply battery positive lead to terminal "D" and negative lead to terminal "A".
Check continuity between terminals "E" and "C". If there is continuity, relay is okay. If there is no
continuity, replace relay.
A/C RELAY TEST
Fig. 2: A/C Relay Connector Terminal ID
Courtesy of MAZDA MOTORS CORP.
Terminal (+)(1) Terminal (-)(2) Continuity
ABYes
ADYes
BANo
CENo
DANo
ECYes
(1)Connect ohmmeter positive lead to this terminal.
(2)Connect ohmmeter negative lead to this terminal.
1991 Mazda MX-5 Miata
A/C-HEATER SYSTEM - MANUAL 1990-92 Manual A/C-Heater Systems
Microsoft
Sunday, July 05, 2009 2:11:52 PMPage 5 © 2005 Mitchell Repair Information Company, LLC.
