Mitsubishi Grandis. Manual — part 8
DIAGNOSIS CODE CHART
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-29
DIAGNOSIS CODE CHART
M1549000700320
NOTE:
.
•
*1
: For vehicles without sunroof, diagnosis code No.4 does not mean that there is a problem.
•
*2
: For M/T-vehicles, diagnosis code No.12 does not mean that there is a problem.
•
*3
: Diagnosis code No.15 does not mean that there is a problem.
Diagnosis code No.
Diagnostic item
Reference page
01
Trouble in SWS communication line system or
ETACS-ECU
02
Communication error with column switch
03
Communication error with front-ECU
04
*1
Communication error with sunroof-ECU
05
Communication error with power window main switch
10
Bus off
11
Engine-A/T-ECU time-out (related to engine)
12
*2
Engine-A/T-ECU time-out (related to A/T)
13
A/C-ECU time-out
14
Meter time-out
15
*3
Centre display unit time-out
−
21
Meter failure information
DIAGNOSTIC TROUBLE CODE PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-30
DIAGNOSTIC TROUBLE CODE PROCEDURES
Diagnosis code No.01 Trouble in SWS communication line system or ETACS-ECU
CAUTION
If diagnosis code No.01 is set in the ETACS-ECU,
diagnose the CAN bus lines.
ETACS-ECU
COLUMN
SWITCH
FRONT-ECU
SUNROOF
MOTOR
ASSEMBLY
POWER
WINDOW
MAIN SWITCH
COLUMN-ECU
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
CPU
CPU
SWS Communication Line <LHD>
DIAGNOSTIC TROUBLE CODE PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-31
TROUBLE JUDGMENT
The ETACS-ECU communicates with the column
switch, the front-ECU, the sunroof motor assembly
and the power window main switch through the SWS
communication line. If there is any trouble in the
ETACS-ECU or the SWS communication lines,
diagnosis code No.01 will be set.
COMMENT ON TROUBLE SYMPTOM
The wiring harness wire or connectors may have
loose, corroded, or damage terminals, or terminals
pushed back in the connector, or the ETACS-ECU
may be defective.
POSSIBLE CAUSES
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. MUT-III CAN bus diagnostics
Use the MUT-III to diagnose the CAN bus lines.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the CAN bus line (Refer to GROUP
54D
− Diagnosis
Step 2. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set.
(1) Ignition switch: LOCK (OFF) position to ON
(2) Erase the diagnosis code.
(3) On completion, check that the diagnosis code is
not reset.
Q: Is the check result normal?
YES :
If a trouble is solved, it is determined that
there is an intermittent malfunction such as
poor engaged connector(s) or open circuit
(Refer to GROUP 00
− How to use
troubleshooting/Inspection Service Points
).
NO :
Replace the ETACS-ECU.
ETACS-ECU
COLUMN
SWITCH
FRONT-ECU
POWER
WINDOW
MAIN SWITCH
SUNROOF
MOTOR
ASSEMBLY
CPU
CPU
COLUMN-ECU
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
SWS Communication Line <RHD>
DIAGNOSTIC TROUBLE CODE PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-32
Diagnosis code No.02 Communication error with column switch
CAUTION
If diagnosis code No.02 is set in the ETACS-ECU,
diagnose the CAN bus lines.
FUSIBLE
LINK
26
IGNITION
SWITCH (IG1)
RELAY
BOX
COLUMN
SWITCH
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
COLUMN-ECU
ETACS-ECU
DIAGNOSIS
CONNECTOR
FRONT SIDE
Column Switch Power Supply and SWS Communication Circuit <LHD>
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