Internal Component Replacement (Inside Rear Enclosure)
11-42 Service Manual
c. Supporting the USB connector, rotate the rear enclosure so that you can
access the outside. Secure the connector by installing the two screws from the
outside of the enclosure. Tighten the screws to 0.18 to 0.27 N-m (1.6 to 2.4
lb-in).
18. Remove the strap or cable tie from the hose duct adapter.
19. Reconnect the cables to the Power PCBA as follows (Figure 11-33 on page 11-36):
a. Connect the heater cable to the 5-pin P114 connector. Make sure that the
connector is oriented as shown in Figure 11-33, and that it is fully seated.
b. Connect the thermostat cable to the 2-pin P113 connector. Make sure that
the connector is oriented as shown in Figure 11-33, and that it is fully seated.
c. Connect the fan cable to the 4-pin P111 connector. Make sure the connector
latch engages.
d. Connect the thermistor cable to the 2-pin P108 connector. Make sure the
connector latch engages.
20. Make sure that thermostat cable is routed as shown in Figure 11-30 on
page 11-33. It must be positioned to the inside of the adjacent screw boss and
pole clamp mounting bolt and inside the tabs around the fan assembly.
21. Place a cable tie around the fan cable and thermistor cable approximately 10 cm
(4 inches) from the Power PCBA connectors (Figure 11-35 on page 11-38). Trim
the end of the cable tie.
22. Follow the procedure Rejoining the Front and Rear Enclosures on page 9-5.
23. At the back of the unit, rotate the cover for the USB port back into position, and
tighten the screw to 1.1 to 1.5 N-m (9.7 to 13.3 lb-in).
24. Perform the following tests:
a. Power-On Test on page 7-3.
b. Temperature Accuracy Test on page 7-8.
c. Flow Test on page 7-10.
d. Thermostat Test on page 7-11.
e. Electrical Safety Tests on page 7-14.
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