Intermittent wiper problem, ETACM
 

I have a 1999 Elantra and the intermittent wiper control and park position does not work. The slow and fast speeds work fine. I have checked fuses and motor works fine (connected up spare working motor, and verified it worked, only on slow and fast wiper speeds as well). I do hear a "click" behind the ashtray (ETACM?) whenever I switch on the wipers for intermittent, slow or fast speeds.

According to the schematics the ETACM is responsible for the intermittent wiper, timing control, and auto parking. I need to first get to the module (in back of ashtray/radio), check the power to it, the grounding, and possibly replace it.

My question is which electronic module is it behind the radio, upper one or lower one? Each one has a multi-wire connector. Both boxes have a sticker label HMC One is stamped "AT" (w/18 wire connector) the other has a 20 wire connector. Any other concerns I should be aware of?

Thank you, ace

RE: Intermittent wiper problem, ETACM
 

The problem was the ETACM. This was replaced and now the intermittent wiper control and park position work.

Ace