Mitsubishi Galant 9G. Manual - part 6
SWS DIAGNOSIS
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-20
Front-ECU, P/W, S/R
NOTE: For item No.70, the scan tool MB991958
(MUT-III Sub Assembly) also displays "NG" under
"ECU COMM Check" when it displays "NO ACK"
under the front-ECU check.
NOTE: For item No.72, the scan tool MB991958
(MUT-III Sub Assembly) also displays "NG" under
"ECU COMM Check" when it displays "NO ACK"
under the sunroof-ECU check.
<FUNCTION DIAGNOSIS>
The table below shows the service data and their
normal condition, which are displayed during the
"Function Diag." The column "Normal condition"
shows values that are shown when each operation is
made.
.
CHECK
ITEM
ITEM NO. DISPLAY ON
SCAN TOOL
CHECK CONDITION
NORMAL
CONDITION
Response by
the
front-ECU
70
FRONT ECU
ACK
Lighting switch: Other than OFF (excluding
when high-beam is on) or the wiper switch
is at position other than OFF (ignition
switch: ACC or ON)
NORMAL ACK
• Ignition switch: Other than ON
• Lighting switch: OFF
• Wiper switch: OFF
SLEEP ACK
• Lighting switch: HEAD
• Headlights: at high beam
HI-BEAM ACK
Other than the condition above
NO ACK
Response by
the
sunroof-ECU
72
S/R ECU ACK
1. Door switch: OFF
2. Ignition switch: ON
→ OFF
3. While sunroof is off
NORMAL ACK
→
SLEEP ACK (after
approximately 30
seconds)
1. Ignition switch: ON or START
2. One of the sunroof switches is on
INPUT CHECK to
NORMAL ACK
Other than the above conditions
NO ACK