Suzuki Grand Vitara JB416 / JB420. Manual — part 429
10E-21 Keyless Start System:
Description
The keyless start control module detects DTC by using signals from the key reminder and driver side door request
switches. The keyless start control module makes the key indicator lamp in the combination meter flash on and off by
using CAN communication.
Troubleshooting
Step
Action
Yes
No
1
Combination meter power and ground circuit check
1) Turn ignition switch to ON position.
Do warning lamps in combination meter other than key
indicator lamp light up?
Go to Step 2.
Check main fuse, circuit
fuse, combination meter
power and ground
circuit.
2
Driver side door request switch and its circuit check
1) Check driver side door request switch and its circuit
Is it in good condition?
Go to Step 3.
Repair or replace
malfunction part.
3
Key reminder switch and its circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connector from ignition switch.
3) Check key reminder switch for operation referring to
“Ignition Switch Inspection in Section 9C”.
4) If OK, check for open, short and high resistance in key
reminder switch circuit.
Is it in good condition?
Go to Step 4.
Repair or replace
malfunction part.
4
Keyless start control module power supply and ground
circuit
1) Check keyless start control module power and ground
circuit for condition referring to “Keyless Start Control
Module Power and Ground Circuit Check”.
Is it in good condition?
Go to Step 5.
Repair circuit.
5
CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control
modules for open, short and high resistance.
Is each CAN communication circuit in good condition?
Substitute a known-
good keyless start
control module and
recheck.
Repair circuit.
Keyless Start System: 10E-22
Key Indicator Lamp Circuit Check (Key indicator lamp doesn’t light when ignition knob switch is
pushed.)
S5JB0AA504014
Wiring Diagram
Description
When the ignition knob switch is pushed, the key indicator lamp lights up in blue if you carry the remote controller
registered in the keyless start control module and it lights in red if you carry the remote controller which has not been
registered in the keyless start control module or if you carry no remote controller.
Troubleshooting
BLK G44-9
G44-15
G44-14
G44-20
G44-29
G44-30
G44-10
G44-34
G44-11
WHT/BLK
WHT
WHT
YEL
5V
5V
5V
5V
5V
12V
WHT
RED
WHT
RED
G44-18
G44-19
BLU/RED
BRN/RED
BLK/YEL
BRN/YEL
ORN
G22-3
G22-4
G22-5
G22-2
G22-1
G22-6
G22-7
G22-8
WHT
WHT
G44
[A]
1
2
3
4
5
6
7
8
9
10
11
14
15
16
36
34 33 32
30 29
24 23
37
18
19
20
WHT
G28-8
G28-10
G28-14
8
1
2
3
5
7
6
4
I5JB0AA50014-03
[A]: Keyless start control module connector (viewed from harness side)
3. Key indicator lamp
6. Key reminder switch
1. Keyless start control module
4. Steering lock unit
7. Ignition knob switch
2. Combination meter
5. Steering lock solenoid
8. Junction block
Step
Action
Yes
No
1
Combination meter power and ground circuit check
1) Turn ignition switch to ON position.
Do warning lamps in combination meter other than key
indicator lamp light up?
Go to Step 2.
Check main fuse, circuit
fuse, combination meter
power and ground
circuit.
2
Keyless start control module power and ground circuit
check
1) Check keyless start control module power and ground
circuit for condition referring to “Keyless Start Control
Module Power and Ground Circuit Check”.
Is it in good condition?
Go to Step 3.
Repair circuit.
3
Steering lock unit ignition knob switch check
1) Check ignition knob switch of steering lock unit for
operation referring to “Steering Lock Unit Inspection”.
Is it in good condition?
Go to Step 4.
Replace steering lock
unit.
10E-23 Keyless Start System:
Keyless Start Control Module Power and Ground Circuit Check
S5JB0AA504015
Wiring Diagram
4
Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connector from keyless start control module,
steering lock unit and combination meter.
3) Check for open, short and high resistance in.
• Between “G22-5” terminal of steering lock unit
connector and “G44-34” terminal of keyless start
control module connector
• Between “G28-10” terminal of combination meter
connector and “G44-19” terminal of keyless start
control module connector
• Between “G28-8” terminal of combination meter
connector and “G44-18” terminal of keyless start
control module connector
Is it in good condition?
Go to Step 5.
Repair circuit.
5
Keyless start system operation check
1) With remote controller of which ID code is registered in
keyless start control module carried with you, try to turn
ignition knob switch.
Can it be turned to any position other than “LOCK” position?
Replace combination
meter.
Substitute a known-
good keyless start
control module and
recheck.
Step
Action
Yes
No
[A]: Keyless start control module connector (viewed from harness side)
2. Ignition switch
4. Main fuse
1. Keyless start control module
3. Circuit fuse
5. Junction block
BLK G44-9
G44-15
G44-10
G44-11
WHT/BLK
WHT
YEL
5V
12V
G44
[A]
1
2
3
4
5
6
7
8
9
10
11
14
15
16
36
34 33 32
30 29
24 23
37
18
19
20
5
2
4
1
3
3
I5JB0AA50015-03
Keyless Start System: 10E-24
Troubleshooting
DTC No. 11: Communication Error with Steering Lock Unit
S5JB0AA504016
Wiring Diagram
Step
Action
Yes
No
1
Fuse check
1) Turn ignition switch to OFF position.
2) Check circuit fuse and main fuse for condition.
Are fuses in good condition?
Go to Step 2.
Replace fuse(s) and
check for short.
2
Power supply circuit check
1) Disconnect connector from keyless start control module.
2) Check for proper connection to “G44-10”, “G44-11” and
“G44-15” terminals of keyless start control module
connector.
3) If OK, measure voltage between the following terminals.
• When ignition switch is at OFF position
Between “G44-10” terminal of keyless start control
module connector and vehicle body ground: 10 – 14 V
• When ignition switch is at ACC position
Between “G44-11” terminal of keyless start control
module connector and vehicle body ground: 10 – 14 V
• When ignition switch is at ON position
Between “G44-15” terminal of keyless start control
module connector and vehicle body ground: 10 – 14 V
Is check result satisfactory?
Go to Step 3.
Repair power supply
circuit.
3
Ground circuit check
1) Check for proper connection to “G44-9” terminal of
keyless start control module connector.
2) If OK, measure resistance between “G44-9” terminal of
keyless start control module connector and vehicle body
ground.
Is resistance 1
Ω
or less?
Power and ground
circuit is in good
condition.
Repair ground circuit.
G44
[A]
1
2
3
4
5
6
7
8
9
10
11
14
15
16
36
34 33 32
30 29
24 23
37
18
19
20
5V
G44-20
G44-29
G44-30
G22-3
G22-7
G22-8
5V
5V
ORN
BRN/YEL
BLK/YEL
5V
2
1
I5JB0AA50016-02
[A]: Keyless start control module connector “G44” (viewed from harness side)
2. Steering lock unit
1. Keyless start control module
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