Mitsubishi Grandis. Manual — part 58
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-229
Step7. Check the wiring harness between A-34
windshield washer motor connector terminal
No.1 and A-15X front-ECU connector terminal
No.21.
• Check the power supply line to the ignition switch
(ACC) for open circuit.
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the wiring harness.
Step 8. Retest the system.
The windshield washer should now work normally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Replace the front-ECU.
AC311521AC
Connector: A-15X
Relay box side
21
22
23
24
25
26
27
28
29
30
31
AC310401
Connector: A-34 <LHD>
Harness side
A-34 (GR)
AF
AC310396
Connector: A-34 <RHD>
Harness side
A-34 (GR)
AF
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-230
REAR WIPER AND WASHER
INSPECTION PROCEDURE H-1: The rear wiper does not work at all.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the rear wiper does not work normally, the input
signal circuits to the components below, the rear
wiper motor or the ETACS-ECU may be defective.
• Ignition switch (ACC)
• Rear wiper switch
POSSIBLE CAUSES
• Malfunction of the rear wiper motor
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
IGNITION
SWITCH (ACC)
REAR
WIPER RELAY
REAR
WIPER MOTOR
ETACS-ECU
J/B SIDE
REAR WIPER SWITCH
INPUT SIGNAL
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
Rear Wiper Drive Circuit
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-231
DIAGNOSTIC PROCEDURE
Step 1. Use the MUT-III to confirm a diagnosis
code.
Check that the ETACS-ECU sets a diagnosis code.
Q: Is diagnosis code set?
YES :
Refer to diagnosis code chart
NO :
Go to Step 2.
Step 2. Pulse check
Check the input signals below which are related to
the rear wiper.
OK: The MUT-III sounds or the voltmeter
needle fluctuates.
Q: Are the check result normal?
All the signals are received normally. :
Go to Step
The ignition switch (ACC) signal is not received. :
Refer to inspection procedure Q-1 "The
ignition switch (ACC) signal is not received
The column switch (rear wiper switch) signal is not
received. :
Refer to inspection procedure Q-7 "The
column switch (windshield wiper washer
and rear wiper washer switch) signal is not
received
."
Step 3. Connector check: G-05 rear wiper motor
connector
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair the connector.
Step 4. Check the rear wiper motor.
Refer to GROUP 51
− Rear wiper and washer
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Replace the rear wiper motor.
Step 5. Resistance measurement at the G-05 rear
wiper motor connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between G-05 rear wiper motor
connector terminal No.4 and body earth
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 6.
System switch
Check condition
Ignition switch (ACC)
When turned from the
LOCK (OFF) position to
the ACC position
Column switch (rear
wiper switch)
When the switch is
turned from off to on
AC310222
Connector: G-05
AH
Harness side
AC310222
Connector: G-05
AH
Harness side
AC310506
Connector G-05
(Harness side)
BS
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-232
Step 6. Check the wiring harness between G-05
rear wiper motor connector terminal No.4 and
body earth.
• Check the earth line for open or short circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
Step 7. Connector check: C-219 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the connector.
AC310222
Connector: G-05
AH
Harness side
AC310626AD
Connector: C-219 <LHD>
Junction block (Rear view)
Junction block side
AC310620
Connector: C-219
Junction block
(Rear view)
<RHD>
AB
Junction block side
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