S 215-021

 (14)
 Make sure the EICAS level C alert message L ENG ANTI-ICE is shown on the EICAS display.

 S 485-080

 (15)
 Put a jumper between pins 1 and 2 of the high pressure switch electrical connector. Make sure the EIACS message L ENG TAI VALVE message is shown on the EICAS display.

 S 085-081

 (16)
 Remove the jumper from pins 1 and 2 of the high pressure switch electrical connector.

 S 435-096

 (17)
 Connect the electrical connector to the high pressure switch.

 (18)
 Connect the electrical connector to the TAI valve.

 S 865-089

 (19)
 Put the L ENGINE ANTI-ICE switch-light on the P5 panel in the OFF position.

 S 435-025
 G. Test - Right Engine TAI System (Fig. 501)
 S 865-101
 (1)  Open this circuit breaker on the overhead circuit breaker panel, P11, and attach a DO-NOT-CLOSE tag:
 (a)  11C28, ENG ANTI-ICE RIGHT (Without EROPS)
 11C28, ANTI-ICE ENG RIGHT (With EROPS)

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MAINTENANCE MANUAL

 (2)  S 035-082Disconnect the electrical connectors that follow: (a) The high pressure switch (b) The low pressure switch (c) The Thermal Anti-Ice (TAI) valve.
 (3)  S 865-102Remove the DO-NOT-CLOSE tag and close this P11 panel circuit breaker: (a) 11C28, ENG ANTI-ICE RIGHT
 (4)  S 865-031Put the R ENGINE ANTI-ICE switch-light on the P5 panel in the OFF position.
 (5)  S 765-032Measure the voltage at pin 1 of the TAI valve electrical connector. Make sure the voltage is less than 2v dc.
 (6)  S 765-033Measure the voltage at pin 1 of the low pressure switch electrical connector. Make sure the voltage is 23 to 32v dc.
 (7)  S 865-083Put the R ENGINE ANTI-ICE switch-light on the P5 panel in the ON position.
 (8)  S 765-035Measure the voltage at pin 1 of the low pressure switch electrical connector. Make sure the voltage is 23 to 32v dc.
 (9)  S 765-036Measure the voltage at pin 1 of the TAI valve electrical connector. Make sure the voltage is 23 to 32v dc.
 S 865-084

 (10)
 Make sure the six EICAS circuit breakers on the P11 panel are closed.

 S 215-038

 (11)
 Make sure the EICAS message R TAI message is shown on the EICAS display.