Error Messages, Codes, and Procedures 3-241
2
Test the Door D Interlock Switch.
Run the Service Diagnostics Door D
Interlock Switch test.
Does the sensor state change each time
the switch is pressed?
Replace the
Engine Logic
Board
(
page 8-89).
Go to Step 3.
3
Check the switch connections.
Are J124 and P/J541 connected?
Go to Step 4. Connect P/J124
and P/J541.
4
Check continuity between the switch and
the Duplex PWB.
Is there continuity on each wire
between J124 <=> P/J541?
Go to Step 5. Repair the wiring.
5
Check for +5 V to the switch.
Is there +5 V across J124-2 <=> ground?
Replace the
switch
(
page 3-74).
Go to Step 6.
6
Check the Duplex PWB connection.
Are P/J540 and P/J417 connected?
Go to Step 7. Connect P/J540
and P/J417.
7
Check continuity between the Duplex PWB
and the Engine Logic Board.
1. Disconnect P/J540 and P/J417.
2. Check for continuity at the following:
P/J540-1 <=> P/J417-A1
P/J540-2 <=> P/J417-B1
P/J540-3 <=> P/J417-A2
P/J540-4 <=> P/J417-B2
P/J540-5 <=> P/J417-A3
P/J540-6 <=> P/J417-B3
P/J540-7 <=> P/J417-A4
P/J540-8 <=> P/J417-B4
Are these conductive?
Go to Step 8. Repair the wiring.
8
Check for +5 V to the Duplex PWB.
Is there +5 V across P/J540-1 (+) <=>
ground?
Replace the
Duplex PWB
(
page 3-77).
Replace the
Engine Logic
Board
(
page 8-89).
Door D Open (Door D Interlock Switch) Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No
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