SIL 014, 015, 020
C 7 C01678 WEATHER RADAR RT RIGHT
F/O Electrical System Panel, P6-1
Row Col Number Name

SIL ALL
D 13 C00120 WEATHER RADAR RT
F/O Electrical System Panel, P6-3
Row Col Number Name
B 17 C00129 LANDING GEAR LATCH & PRESS WARN

D.  Related Data
(1)
(SSM 34-41-11), .

(2)
(WDM 34-41-11),.

E.  Initial Evaluation
(1)  Do this task: Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-802-001 or Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-803-002.
(a)  
If the tilt code does not show then there was an intermittent fault.

(b)  
If the tilt code shows then do the Fault Isolation Procedure below.

F. Fault Isolation Procedure
(1)  Do the Fault Isolation steps for Air/Ground Relay fault.
(a)  Do this task: Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-802-001 or Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-803-002.
1) If the tilt code does not show then you corrected the fault.
2) If the tilt code shows then continue.
(2)  Do this check of the wiring between the weather radar receiver/transmitter and the air/ground relay:
(a)  
Remove the weather radar receiver/transmitter, M101. To remove it, do this task: Weather Radar Receiver/Transmitter Removal, AMM TASK 34-43-41-000-801.

(b)  
Remove the air/ground relay, R589.

(c)  
Do a wiring check between these pins on connector D189B of the weather radar receiver/ transmitter, in the forward equipment center, and connector D11012 of the air/ground relay (WDM 34-41-11).

D189B  D11012
pinK10 -----------------pinC3

(d)  If you find a problem with the wiring, then do these steps:
EFFECTIVITY SIL ALL  34-43 TASK 819 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 259 Feb 15/2011 

737-600/700/800/900 FAULT ISOLATION MANUAL

1) Repair the wiring.
2) Re-install the weather radar receiver/transmitter, M101. To install it, do this task:

Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801. 3) Re-install the air/ground relay, R589. 4) Do this task: Weather Radar (WXR) System -Operational Test, AMM
TASK 34-43-00-710-802-001 or Weather Radar (WXR) System -Operational Test,
AMM TASK 34-43-00-710-803-002.
a) If the weather radar operational test passes, then you corrected the fault.

(e)  If you do not find a problem with the wiring, then continue. 1) Re-install the weather radar receiver/transmitter, M101. To install it, do this task:
Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801. 2) Re-install the air/ground relay, R589.
SIL 014, 015, 020
(3)  Do this check of the wiring between the Left (Right) weather radar receiver/transmitter and the air/ground relay:
(a)  
Remove the Left (Right) weather radar receiver/transmitter, M101 (M460). To remove it, do this task: Weather Radar Receiver/Transmitter Removal, AMM TASK 34-43-41-000-801.

(b)  
Remove the air/ground relay, R589.

(c)  
Do a wiring check between these pins on connector D189B (D673B) of the Left (Right) weather radar receiver/transmitter, in the forward equipment center, and connector D11012 of the air/ground relay (WDM 34-41-11), .

D189B (D673B)  D11012 (D11012)
pinK10(K10) -------------pinC3(C3)

(d)  
If you find a problem with the wiring, then do these steps: 1) Repair the wiring. 2) Re-install the Left (Right) weather radar receiver/transmitter, M101 (M460). To install it,

do this task: Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801. 3) Re-install the air/ground relay, R589. 4) Do this task: Weather Radar (WXR) System -Operational Test, AMM TASK 34-43-00-710-802-001. a) If the weather radar operational test passes, then you corrected the fault.
　
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