What was found
LEFT ENG ANTI-ICE EICAS C, LT ENGINE IS IN OPERATION & LT ENG COWL ANTI-ICE VALVE POSITION DOES NOT AGREE WITH THE LT ENG COWL ANTI-ICE SWITCH POSITION LT ENG ANTI ICE CAUTION MESSAGE. COMPLY WITH NNC CHKED, MEGGED & LOAD TESTED WIRES & CIRCUIT TO & FROM D1320 PINS 1,2 THRU VALVE TO X2 ON K10060 CHKS NORMAL. CHKED VOLTAGE & LOAD TESTED D1318 1,2 CHKS NORMAL. CHKED & LOAD, TESTED FROM K10060,K10601 THRU S1 ON P5 ALSO CHKED NORMAL IAW SSM/WDM 30-21-01. PRESS CHKED S10135 WITH NITROGEN WHEN PRESS IS APPLIED, SWITCH GOES INTERMITANT OPEN & BACK TO CLOSE. SWITCH NEVER STAYS OPEN. SUGGEST CHANGING K10060 AS PRECUATION IAW TECH SUPORT, R & R RELAY K10060 IAW WDM 30-21-11-1.1. R & R LT ENG ANTI ICE PRESS SWITCH & OPS CHKD GOOD IAW AMM 30-21-01.