Suzuki Grand Vitara JB419. Service manual — part 76
Transfer: 3C-2
General Description
Input / Output Signal Table of 4WD Control Module
S5JB0B3301008
4WD control module outputs the following signals to actuators, indicators, warning buzzer, according to the transfer
switch operation.
CAN Communication System Description
S5JB0B3301010
Refer to “CAN Communication System Description in Section 1A”.
4WD Control Module Transmission Data
4WD Control Module Reception Data
Output signal (to each component parts)
Transfer
shift
actuator
Differential
lock
indicator
4L indicator N indicator
Warning
buzzer
Input signal
Transfer switch
{
{
{
{
{
CPP switch
{
{
{
{
TCM
{
{
{
{
ABS / ESP
® hydraulic unit /
control module
{
{
{
{
{
4L/N switch
{
{
{
Center differential lock switch
{
{
BCM
Combination
Meter
Transmit
DATA
4WD
Buzzer on reques
Lock indication status
Neutral Indication Status
Low indication status
4WD diagnostic trouble codes
control
module
ABS control
module
(Non-ESP® model)
ESP® control
module
(ESP® model)
4WD shift position
I5JB0A332010-02
ECM
TCM
DATA
Receive
Engine speed signal
Vehicle speed signal
Brake pedal switch active
4WD
control
module
Transmission gear
selector position
Wheel speed pulse
(front right)
Wheel speed pulse
(front left)
Wheel speed pulse
(rear right)
Wheel speed pulse
(rear left)
ABS active
ABS control module
(Non-ESP® model)
ESP® control module
(ESP® model)
ESP® status signal
I6JB01331001-02
3C-3 Transfer:
Schematic and Routing Diagram
4WD Control System Wiring Circuit Diagram
S5JB0B3302001
5V
5V
IG
5V
12V
E91-2
5V
12V
12V
+BB
YEL
RED/BLK
BLU
M
E91-3
E91-25
E91-26
RED
E91-24
BLK/YEL
E91-7
BLK/ORN
E91-21
PPL/WHT
E91-22
E91-23
RED
WHT
E91-18
E91-19
E91-20
E91-13
E91-14
E91-12
E91-11
E91-10
E91-1
BLK
BLK
WHT
BLK/WHT
RED/GRN
PNK/WHT
BLU/ORN
BLU/BLK
LT GRN
12V
12V
G59-2
G59-3
G59-4
C54-1
C54-4
C54-2
C54-3
C54-5
WHT/RED
WHT/BLU
1
2
3
4
5
6
7
8
9
10
12
11
13
14
15
17
18
19
20
21
23
22
16
E91-8
PNK
I5JB0A332007-03
1. Transfer actuator
9. ABS / ESP
® hydraulic unit/control
module
17. DLC
2. Transfer actuator position switch
10. ECM
18. “IG COIL” fuse
3. Transfer actuator motor
11. 4WD control module
19. Ignition switch
4. CPP switch (for M/T model)
12. Transfer switch
20. “4WD” fuse
5. BCM
13. TCM (for A/T model)
21. Shift switch (for A/T model) or CPP switch (for M/T model)
6. TCM (for A/T model)
14. 4L/N switch
22. Main fuse box
7. Combination meter
15. Center differential lock switch
23. Starting motor
8. Keyless start control module (if equipped)
16. Diagnosis connector (if equipped)
Transfer: 3C-4
Terminal Arrangement of 4WD Control Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
[A]
I4JA01332038-01
[A]: Connector “E91” viewed from harness side
Terminal
Circuit
Terminal
Circuit
E91-1
Ground
E91-18
Transfer switch 1
E91-2
Transfer actuator motor 1
E91-19
Transfer switch 2
E91-3
Transfer actuator motor 2
E91-20
Transfer switch 3
E91-7
CPP switch
E91-21
Data link connector (DLC)
E91-8
Diagnosis connector
E91-22
CAN communication line (High)
E91-10
Ground
E91-23
CAN communication line (Low)
E91-11
Power source for internal memory
E91-24
Transfer actuator position switch (ground)
E91-12
Ignition switch
E91-25
Transfer actuator position switch 1 (power)
E91-13
4L/N switch
E91-26
Transfer actuator position switch 2 (power)
E91-14
Center differential lock switch
3C-5 Transfer:
Diagnostic Information and Procedures
Visual Inspection
S5JB0B3304004
Check the following parts and systems visually.
DTC Table
S5JB0B3304007
Inspection Item
Referring
• Front differential oil ---- level, leakage
“Front Differential Oil Change: Front in Section 3B in
related manual”
• Rear differential oil ---- level, leakage
“Rear Differential Oil Change: Rear in Section 3B in
related manual”
• Transfer gear oil ---- level, leakage
“Transfer Oil Change in related manual”
• Manual transmission oil ---- level, leakage
“Manual Transmission Oil Change in Section 5B”
• Transfer mounting(s) ---- wear and looseness
• Fuses ---- burning
• Battery ---- fluid level, corrosion of terminal
“Battery Inspection in Section 1J”
• Connectors of electric wire harness ---- disconnection,
friction
“Intermittent and Poor Connection Inspection in Section
00 in related manual”
• Other parts that can be checked visually
DTC No.
Detecting item
Detecting condition
(DTC will set when detecting)
Transfer
position
indicators
)
C1213
Transfer switch circuit open
Different switch combination from specification is
detected.
{
)
C1214
Transfer switch circuit short
Different switch combination from specification is
detected.
{
)
C1223
Transfer shift actuator motor
position switch 1 circuit open
Actuator position switch signal voltage 4.2 V or
more.
{
)
C1224
Transfer shift actuator motor
position switch 1 circuit short
Actuator position switch signal voltage 0.6 V or
less.
{
)
C1227
4L/N switch circuit open
Though actuator position switch is “4L-lock”
position, the ON signal is not input from the 4L/N
switch.
{
)
C1228
4L/N switch circuit short
Though actuator position switch is “4L-lock”
position, the OFF signal is not input from the 4L/
N switch.
{
)
C1230
Transfer actuator circuit
malfunction
• Position switch in transfer shift actuator is not
changed for 3 seconds even if command
signal of motor relay for transfer shift actuator
(included in 4WD control module) is turned on.
or
• Monitor signal from motor relay of transfer
shift actuator (included in 4WD control
module) is inconsistent with command signal
to motor relay of transfer shift actuator.
{
)
C1235
Transfer shift actuator motor
position switch 2 circuit open
Actuator position switch signal voltage 4.2 V or
more.
{
)
C1236
Transfer shift actuator motor
position switch 2 circuit short
Actuator position switch signal voltage 0.6 V or
less.
{
)
C1237
Center differential lock switch
circuit open
Though actuator position switch is “4H” position,
the ON signal is not input from the center
differential lock switch.
{
)
C1238
Center differential lock switch
circuit short
Though actuator position switch is “4L-lock”
position, the OFF signal is not input from the
center differential lock switch.
{
)
C1240
4WD control module power
supply circuit malfunction
Battery voltage is lower than lower limit voltage
for 4WD control module diagnosis.
{
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