WW-40
< SYMPTOM DIAGNOSIS >
WIPER AND WASHER SYSTEM SYMPTOMS
Front wiper does not
operate normally
Intermittent adjust-
ment cannot be per-
formed
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
BCM
—
Intermittent control
linked with vehicle
speed cannot be per-
formed
Check the wiper setting is linked with vehicle speed.
Refer to
WW-14, "WIPER : CONSULT Function - WIPER"
Service positioning
operation does not
operate
• Combination switch
• BCM
• IPDM E/R
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
Wiper is not linked to
the washer operation
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
BCM
—
Does not return to
stop position [Re-
peatedly operates for
10 seconds and then
stops for 20 seconds.
After that, it stops the
operation. (Fail-
safe)]
• IPDM E/R
• Harness between IPDM E/R and front wiper
motor
• Front wiper motor
Front wiper stop position sig-
nal circuit
Refer to
WW-33, "Compo-
nent Function Check"
.
Rear wiper does not
operate
ON only
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
INT only
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
ON and INT
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
• BCM
• Harness between rear wiper motor and BCM
• Harness between rear wiper motor and ground
• Rear wiper motor
Rear wiper motor circuit
Refer to
WW-36, "Compo-
nent Function Check"
.
Rear wiper does not
stop
ON only
• Combination switch
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
INT only
• Combination switch
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
Rear wiper does not
operate normally
Wiper is not linked to
the washer operation
• Combination switch
• Harness between rear wiper motor and BCM
• BCM
Combination switch
Refer to
BCS-92, "Symptom
Table"
.
BCM
—
Rear wiper does not
return to the stop po-
sition. [Stops after a
five-second opera-
tion. (Fail-safe)]
• BCM
• Harness between rear wiper motor and BCM
• Rear wiper motor
Rear wiper stop position sig-
nal circuit
Refer to
WW-38, "Compo-
nent Function Check"
.
Symptom
Probable malfunction location
Inspection item