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Page Title:
WINDSHIELD WIPER DOES NOT OPERATE ON LOW SPEED (CONT) |
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 TM 9-2320-366-20-1
TM
e78. WINDSHIELD WIPER DOES NOT OPERATE ON LOW SPEED (CONT)
e78.
WARNING
KNOWN INFO
TEST OPTIONS
Read WARNING
4.
Windshield washer
Voltage Test or
on following page.
operates.
STE/ICE-R #89
Is 24 vdc present on
REASON FOR QUESTION
Horn operates.
connector J2-5?
If 24 vdc is not present,
Windshield wiper operates
wire 1527 is faulty. If
on high speed.
24 vdc is present,
Windshield wiper operates
windshield wiper EMI
on intermittent speed.
NO
cable is faulty.
Turn signal switch OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
Repair wire 1527 (para 2-45)
assembly.
or replace WTEC II dashboard cable
YES
Faulty windshield wiper
assembly (para 7-10) or WTEC III
EMI cable.
dashboard cable assembly (para 7-11).
Replace windshield
wiper EMI cable
(para 7-68).
KNOWN INFO
TEST OPTIONS
5.
Windshield washer
Continuity Test or
operates.
STE/ICE-R #91
Is continuity present
REASON FOR QUESTION
Horn operates.
between connector PX21-4
If continuity is not present,
Windshield wiper operates
and a known good ground?
wire 3034 is faulty.
on high speed.
Windshield wiper operates
on intermittent speed.
NO
Windshield wiper motor OK.
Turn signal switch OK.
POSSIBLE PROBLEMS
Repair wire 3034 (para 2-45)
Faulty dashboard cable
or replace WTEC II dashboard cable
YES
assembly.
assembly (para 7-10) or WTEC III
Faulty windshield wiper
dashboard cable assembly (para 7-11).
EMI cable.
Faulty windshield wiper
ECU.
2-890
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