ABS SUZUKI GRAND VITARA 2001 2.G Owner's Manual

ANTILOCK BRAKE SYSTEM (ABS) 5E2-11
Diagnostic Trouble Code (DTC) Check (Using
SUZUKI Scan Tool)
1) After setting cartridge for ABS to SUZUKI scan tool, connect
SUZUKI scan tool to data link connector.
Special tool
(A) : SUZUKI scan tool
2) Turn ignition switch ON.
3) Read DTC according to instructions displayed on SUZUKI
scan tool and print it or write it down. Refer to SUZUKI scan
tool operator’s manual for further details.
4) After completing the check, turn ignition switch off and dis-
connect SUZUKI scan tool from DLC.
Diagnostic Trouble Code (DTC) Clearance
After repair or replace malfunction part(s), clear all DTCs by per-
forming the following procedure.
1) Turn ignition switch OFF.
2) Using service wire (4), connect diagnosis switch terminal (2)
of diagnosis monitor coupler (1) to ground terminal (3).
3) With connection described in above Step 2) maintained, turn
ignition switch ON.
WARNING:
When performing a driving test, select a safe place where
there is neither any traffic nor any traffic accident possi-
bility and be very careful during testing to avoid occur-
rence of an accident.

5E2-12 ANTILOCK BRAKE SYSTEM (ABS)
4) Repeat disconnecting and reconnecting of service wire
between diagnosis and ground terminals 5 times or more at
about 1sec. interval within 10 seconds.
5) Turn ignition switch OFF and disconnect service wire from
monitor coupler.
6) Perform “DRIVING TEST” (Step 2 of “ABS DIAGNOSTIC
FLOW TABLE” in this section) and “DTC CHECK” and con-
firm that normal DTC (DTC 12) is displayed ; not malfunction
DTC.
Diagnostic Trouble Code (DTC) Table
O : Open
S : Short
T : About 10 seconds
NOTE:
It is also possible to clear DTC by using SUZUKI scan
tool. Refer to Cartridge Manual for procedure to clear
DTC.
CAUTION:
Be sure to perform “ABS DIAGNOSTIC FLOW TABLE” before starting diagnosis.
DTC
(displayed
on SUZUKI
scan tool)DTC
(indicated by
ABS warning
lamp)ABS warning lamp flashing
patternDIAGNOSTIC ITEMS
NO DTC 12 Normal
C1015 15 G sensor circuit and 4WD lamp circuit
C1021 21 RF
Wheel speed sensor circuit C1025 25 LF
C1031 31 RR
C1035 35 LR

ANTILOCK BRAKE SYSTEM (ABS) 5E2-13
C1022 22 RF
Wheel speed sensor circuit
or sensor ring C1026 26 LF
C1032 32 RR
C1036 36 LR
C1041 41
RFInlet solenoid valve circuit
C1042 42 Outlet solenoid valve circuit
C1045 45
LFInlet solenoid valve circuit
C1046 46 Outlet solenoid valve circuit
C1055 55
REARInlet solenoid valve circuit
C1056 56 Outlet solenoid valve circuit
C1057 57 Power source
C1061 61 ABS pump motor and/or motor relay circuit
C1063 63 Fail safe-relay
C1071 71 ABS control moduleDTC
(displayed
on SUZUKI
scan tool)DTC
(indicated by
ABS warning
lamp)ABS warning lamp flashing
patternDIAGNOSTIC ITEMS

5E2-14 ANTILOCK BRAKE SYSTEM (ABS)
System Circuit
1. Battery 11. ABS fail-safe transistor (Solenoid valve transistor) 21. To ECM and SDM (if equipped)
2. Main fuses 12. ABS pump motor transistor 22. Stop lamp
3. Ignition switch 13. Pump motor 23. Stop lamp switch
4. Circuit fuses 14. Solenoid valves 24. G sensor (For 4WD vehicle only)
5. Combination meter 15. Diagnosis monitor coupler 25. 4WD lamp (For 4WD vehicle only)
6. ABS warning lamp 16. Right-rear wheel speed sensor 26. ECM (PCM) (For 4WD vehicle only)
7. Brake warning lamp (“EBD” warning lamp) 17. Left-rear wheel speed sensor 27. 4WD switch (For 4WD vehicle only)
8. Warning lamp driver module (for ABS) 18. Right-front wheel speed sensor 28. ECM (PCM)
9. ABS hydraulic unit/control module assembly 19. Left-front wheel speed sensor
10. Terminal arrangement of connector E136 for
ABS hydraulic unit/control module assembly20. Data link connector
TERMINAL CIRCUIT TERMINAL CIRCUIT
E1361 Idle up signal
E13614 ABS warning lamp
2 Stop lamp switch 15 Left-front wheel speed sensor (+)
3 Right-front wheel speed sensor (+) 16 Left-front wheel speed sensor (–)
4 Right-front wheel speed sensor (–) 17 4WD switch
5–18 Ignition switch
6 Right-rear wheel speed sensor (–) 19 Left-rear wheel speed sensor (+)
7 Right-rear wheel speed sensor (+) 20 Left-rear wheel speed sensor (–)
8–21 Data link connector
9–22 Ground (for ABS pump motor)
10 Brake warning lamp (EBD warning lamp) 23 ABS pump motor relay
11 G sensor (For 4WD vehicle only) 24 Ground (for ABS control module)
12 Diagnosis switch terminal 25 ABS fail-safe relay
13 Ground (For G sensor) (For 4WD vehicle only)

ANTILOCK BRAKE SYSTEM (ABS) 5E2-15
Table-A ABS Warning Lamp Circuit Check – Lamp Does Not Come “ON” at
Ignition Switch ON
CIRCUIT DESCRIPTION
Operation (ON/OFF) of ABS warning lamp is controlled by ABS control module through lamp driver module in
combination meter.
If the Antilock brake system is in good condition, ABS control module turns ABS warning lamp ON at the ignition
switch ON, keeps it ON for 2 seconds and then turns it OFF. If an abnormality in the system is detected, ABS
warning lamp is turned ON continuously by ABS control module. Also, it is turned ON continuously by lamp
driver module when the connector of ABS control module is disconnected.
INSPECTION
1. Main fuse 5. ABS warning lamp 9. Brake fluid level switch
2. Ignition switch 6. Brake warning lamp 10. ABS hydraulic unit/control module assembly
3. Circuit fuse 7. Lamp driver module 11. ABS hydraulic unit/control module connector
4. Combination meter 8. Parking brake switch
Step Action Yes No
1 1) Turn ignition switch ON.
Do other warning lamp come ON?Go to Step 2. Go to Step 4.
2 1) Disconnect ABS hydraulic unit/control mod-
ule connector.
Does ABS warning lamp light with ignition
switch ON?Substitute a known-good ABS
hydraulic unit/control module
assembly and recheck.Go to Step 3.
3 1) Remove combination meter.
Is bulb of ABS warning lamp in good condition?“BLU/ORN” circuit shorted to
ground. If OK, replace combina-
tion meter (lamp driver module).Replace bulb.
4 Is IG fuse in good condition? Open in “BLK/WHT” wire to
combination meter or poor con-
nection.Repair and replace.

5E2-16 ANTILOCK BRAKE SYSTEM (ABS)
Table-B ABS Warning Lamp Circuit Check – Lamp Comes “ON” Steady
Refer to TABLE – A for System Circuit Diagram and Circuit Description.
INSPECTION
Step Action Yes No
1 Perform diagnostic trouble code check. Is there
any DTC (including code No.12, NO CODES on
SUZUKI scan tool) exists?Go to Step 2. Go to Step 3.
2 Does malfunction DTC (other than code No.12)
exist at Step 1?Go to Step 7 of “ABS
DIAGNOSTIC FLOW
TABLE” in this section.Go to Step 3.
3 1) Disconnect ABS hydraulic unit/control mod-
ule connector.
2) Check for proper connection to ABS
hydraulic unit/control module connector at
terminals “E136-14”, “E136-18” and “E136-
24”.
3) If OK then ignition switch ON and measure
voltage at terminal “E136-18” of connector.
Is it 10 – 14 V?Go to Step 4.“BLK/WHT” circuit open.
4 1) With ABS hydraulic unit/control module con-
nector disconnected, turn ignition switch ON
and light ABS warning lamp.
2) Connect terminal “E136-14” of discon-
nected connector to ground using service
wire.
Does ABS warning lamp turn off?Go to Step 5.“BLU/ORN” circuit open.
If wire and connection are
OK, replace combination
meter (lamp driver mod-
ule).
5 1) Measure resistance from connector terminal
“E136-24” to body ground.
Is continuity indicated?Substitute a known-good
ABS hydraulic unit/con-
trol module assembly and
recheck.“BLK” circuit open.

ANTILOCK BRAKE SYSTEM (ABS) 5E2-17
Table-C ABS Warning Lamp Circuit Check – The Lamp Flashes Continuously
While Ignition Switch Is ON
CIRCUIT DESCRIPTION
When diagnosis switch terminal is shorted or connected to the ground with ignition switch ON, diagnosis trouble
code (DTC) is indicated by flashing of ABS warning lamp only in the following cases.
Normal DTC (12) is indicated if no malfunction DTC is detected in the ABS.
A history malfunction DTC is indicated by flashing of the lamp if a current malfunction DTC is not detected at
that point although a history malfunction DTC is stored in memory.
INSPECTION
1. ABS warning lamp in combination meter 3. Diagnosis monitor coupler 3-2. Diagnosis ground terminal
2. ABS hydraulic unit/control module assembly 3-1. Diagnosis switch terminal 4. ABS hydraulic unit/control module connector
Step Action Yes No
1 Is diagnosis switch terminal connected to
ground via service wire?Go to Step 3. Go to Step 2.
2 1) Ignition switch ON.
2) Measure voltage between diagnosis switch
terminal and ground.
Is it 10 – 14 V?Substitute a known-good
ABS hydraulic unit/con-
trol module assembly and
recheck.“PNK” wire circuit shorted
to ground.
3 1) Ignition switch ON.
2) Does flashing of ABS warning lamp indicate
DTC?Go to Step 7 of “ABS
DIAGNOSTIC FLOW
TABLE” in this section.Substitute a known-good
ABS hydraulic unit/con-
trol module assembly and
recheck.

5E2-18 ANTILOCK BRAKE SYSTEM (ABS)
Table-D Code (DTC) Is Not Outputted Even with Diagnosis Switch Terminal
Connected to Ground
CIRCUIT DESCRIPTION
When diagnosis switch terminal is connected to ground with ignition switch turned ON, the ABS control module
outputs diagnostic trouble code by flashing ABS warning lamp.
INSPECTION
1. ABS warning lamp in combination meter 3. Diagnosis monitor coupler 3-2. Diagnosis ground terminal
2. ABS hydraulic unit/control module assembly 3-1. Diagnosis switch terminal 4. ABS hydraulic unit/control module connector
Step Action Yes No
1 Is it shorted diagnosis switch terminal and
ground terminal by service wire properly?Go to Step 2. Connect service wire
securely.
2 1) Disconnect service wire.
2) Disconnect ABS hydraulic unit/control mod-
ule connector.
3) Measure resistance between diagnosis
switch terminal and connector terminal
“E136-12”.
Is it infinite (∞)?“PNK” circuit open. Go to Step 3.
3 1) Measure resistance between ground termi-
nal of monitor coupler and body ground.
Is continuity indicated?Go to Step 4.“BLK” circuit open or poor
connection.
4 1) Check for proper connection to ABS
hydraulic unit/control module at terminal
“E136-12”.
2) If OK, then check ABS warning lamp circuit
referring to TABLE A, B and C.
Is it in good condition?Substitute a known-good
ABS hydraulic with/control
module assembly and
recheck.Repair “ABS” warning
lamp circuit.

ANTILOCK BRAKE SYSTEM (ABS) 5E2-19
Table-E EBD Warning Lamp (Brake Warning Lamp) Check – Lamp Comes
“ON” Steady
CIRCUIT DESCRIPTION
EBD warning lamp (brake warning lamp) is controlled by parking brake switch, brake fluid level switch and ABS
control module/hydraulic unit assembly through lamp driver module in combination meter. Refer to “TABLE – A”
for circuit diagram.
INSPECTION
Step Action Yes No
1 1) Make sure that :
Parking brake is completely released.
Brake fluid level is upper than the minimum
level.
Are the check results OK?Go to Step 2. Release parking brake
completely and/or replen-
ish brake fluid.
2Does “ABS” warning lamp come on? Perform “TABLE – B” pre-
viously outlined.Go to Step 3.
3 1) Disconnect ABS hydraulic unit/control mod-
ule connector.
2) Check for proper connection to ABS
hydraulic unit/control module connector at
terminals “E136-10”.
3) If OK, apply chocks to wheels and select
gear in neutral position (P range for A/T).
4) Keep brake pedal depressed and start
engine.
Release parking brake.
5) Connect terminal “E136-10” of discon-
nected connector to ground using service
wire.
Does EBD warning lamp (brake warning lamp)
turn off?Substitute a known-good
ABS hydraulic unit/con-
trol module assembly and
recheck.“BRN” circuit open.
If wire and connection are
OK, replace combination
meter.

5E2-20 ANTILOCK BRAKE SYSTEM (ABS)
DTC C1015 (DTC 15) – G Sensor Circuit and 4WD Lamp Circuit
DESCRIPTION
G sensor
While a vehicle is at stop or running, if the potential difference between the sensor signal terminal “E136-11” and
the sensor ground terminal “E136-13” is not within the specified voltage value, or if the signal voltage while at a
stop does not vary from that while running, this DTC is set.
Therefore, this DTC may be set when a vehicle is lifted up and its wheel(s) is turned. In such case, clear the
DTC and check again.
When G sensor is installed to 2WD vehicle, this DTC is set.
4WD lamp
When 4WD lamp circuit open or shorted, this DTC is set.
1. Ignition switch 3. ABS hydraulic unit/control module assembly 5. 4WD lamp 7. 4WD switch
2. G sensor 4. ABS hydraulic unit/control module connector 6. ECM (PCM)