Diagnostic Information And Procedures; Visual Inspection; Supply Circuit Malfunction; 4Wd Control Module - Suzuki GRAND VITARA 2005 Service Manual

Visual Inspection

Check the following parts and systems visually.
Inspection Item
• Front differential oil ---- level, leakage
• Rear differential oil ---- level, leakage
• Transfer gear oil ---- level, leakage
• Manual transmission oil ---- level, leakage
• Transfer mounting(s) ---- wear and looseness
• Fuses ---- burning
• Battery ---- fluid level, corrosion of terminal
• Connectors of electric wire harness ---- disconnection,
friction
• Other parts that can be checked visually
DTC Table
DTC No.
C1213 Transfer switch circuit open
C1214 Transfer switch circuit short
Transfer shift actuator motor
C1223
position switch 1 circuit open
Transfer shift actuator motor
C1224
position switch 1 circuit short
C1227 4L/N switch circuit open
C1228 4L/N switch circuit short
Transfer actuator circuit
C1230
malfunction
Transfer shift actuator motor
C1235
position switch 2 circuit open
Transfer shift actuator motor
C1236
position switch 2 circuit short
Center differential lock switch
C1237
circuit open
Center differential lock switch
C1238
circuit short
4WD control module power
C1240

supply circuit malfunction

Internal circuit malfunction of
C1243

4WD control module

Clutch pedal position (CPP)
C1246

switch circuit short

Control module communication
U1073
bus off

Diagnostic Information and Procedures

Detecting item
"Front Differential Oil Change: Front in Section 3B in
related manual"
"Rear Differential Oil Change: Rear in Section 3B in
related manual"
"Transfer Oil Change: in related manual"
"Manual Transmission Oil Change: in Section 5B"
"Battery Inspection: in Section 1J"
"Intermittent and Poor Connection Inspection: in
Section 00 in related manual"
Detecting condition
(DTC will set when detecting)
Different switch combination from specification is
detected.
Different switch combination from specification is
detected.
Actuator position switch signal voltage 4.2 V or
more.
Actuator position switch signal voltage 0.6 V or
less.
Though actuator position switch is "4L-lock"
position, the ON signal is not input from the 4L/N
switch.
Though actuator position switch is "4L-lock"
position, the OFF signal is not input from the 4L/
N switch.
Transfer switch is changed of position, and then
actuator position switch is not changed for more
than 3 seconds.
Actuator position switch signal voltage 4.2 V or
more.
Actuator position switch signal voltage 0.6 V or
less.
Though actuator position switch is "4H" position,
the ON signal is not input from the center
differential lock switch.
Though actuator position switch is "4L-lock"
position, the OFF signal is not input from the
center differential lock switch.
Battery voltage is lower than lower limit voltage
for 4WD control module diagnosis.
EEPROM error
CPP switch signal is input when vehicle speed is
30 km/h (19 mph).
Transmitting and receiving error of 4WD control
module for specified time continuously.
Transfer:
S5JB0B3304004
Referring
S5JB0B3304007
Transfer
position
indicators
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3C-4