Check engine light comes on SUZUKI SWIFT 2006 2.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine Maintenance and Lubrication: 0B-13
Brake
Foot brake
Check the following:
• that brake pedal has proper travel,
• that brake works properly,
• that it is free from noise,
• that vehicle does not pull to one side when brake is applied.
• and that brake do not drag.
Parking brake
Check that lever has proper travel.
WARNING!
With vehicle parked on a fairly steep slope,
make sure nothing is in the way downhill to
avoid any personal injury or property
damage. Be prepared to apply regular brake
quickly even if vehicle should start to move.

Check to ensure that parking brake is fully effective
when the vehicle is stopped on the safe slope and brake
lever is pulled all the way.
Steering
• Check to ensure that steering wheel is free from instability, or abnormally heavy feeling. • Check that the vehicle does not wander or pull to one
side.
Engine
• Check that engine responds readily at all speeds.
• Check that engine is free from abnormal noise and abnormal vibration.
Body, Wheels and Power Transmitting System
Check that body, wheels and power transmitting system
are free from abnormal noise and abnormal vibration or
any other abnormal condition.
Meters and Gauge
Check that speedometer, odometer, fuel meter,
temperature gauge, etc. are operating accurately.
Lights
Check that all lights operate properly.
Windshield Defroster
Periodically check that ai r comes out from defroster
outlet when operating heater or air conditioning.
Set mode control lever to defroster position and fan
switch lever to “HI” position for this check.
Specifications
Tightening Torque SpecificationsS7RS0B0207001
Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Recommended Fluids and LubricantsS7RS0B0208001
Fastening part Tightening torque
Note
N ⋅mkgf-mlb-ft
Engine oil drain plug 35 3.5 25.5 )
Oil filter 14 1.4 10.5 for reference )
Engine oilSG, SH, SJ, SL or SM grade (Refer to “Engine Oil and Filter Change” for engine
oil viscosity.)
Engine coolant
(Ethylene glycol base coolant) “Antifreeze/Antico
rrosion coolant”
Brake fluid Refer to reservoir cap of brake master cylinder.
Manual transaxle oil Refer to “Manual Transaxle Oil Change in Section 5B”.
Automatic transaxle fluid Refer to “A/T Fluid Change in Section 5A”.
Door hinges Engine oil or water resistance chassis grease
Hood latch assembly Engine oil or water resistance chassis grease
Key lock cylinder Spray lubricant

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Engine
Charging System
General Description
Battery DescriptionS7RS0B1A01001
The battery has three major functions in the electrical
system.
• It is a source of electrical energy for cranking the engine.
• It acts as a voltage stabilizer for the electrical system.
• It can, for a limited time, provide energy when the electrical load exceeds the output of the generator.
Carrier and Hold-Down
The battery carrier should be in good condition so that it
will support the battery securely and keep it level. Before
installing the battery, the ba ttery carrier and hold-down
clamp should be clean and free from corrosion and
make certain there are no parts in carrier.
To prevent the battery from shaking in its carrier, the
hold-down bolts should be tight enough but not over-
tightened.
Electrolyte Freezing
The freezing point of electrolyte depends on its specific
gravity. Since freezing may ruin a battery, it should be
protected against freezing by keeping it in a fully
charged condition. If a battery is frozen accidentally, it
should not be charged until it is warmed.
Sulfation
If the battery is allowed to stand for a long period in
discharged condition, the lead sulfate becomes
converted into a hard, cryst alline substance, which will
not easily turn back to the active material again during
the subsequent recharging. “Sulfation” means the result
as well as the process of that reaction. Such a battery
can be revived by very slow charging and may be
restored to usable condition but its capacity is lower than
before. Built-In Indicator (If Equipped)
The battery has a built-in temperature compensated
indicator in the top of the battery. This indicator is to be
used with the following diagnostic procedure. When
checking the indicator, make sure that the battery has a
clean top. A light may be needed in some poorly-lit
areas.
Three types of indication available under normal
operation are as follows.
•
Green dot
Battery is sufficiently charged for testing.
• Dark
Battery must be charged before testing. If there is a
cranking complaint, battery should be tested as
described in “Battery Inspection”. Charging and
electrical systems should also be checked at this time.
• Clear
This means that fluid level is below the bottom of
hydrometer. Its possible cause is excessive or
prolonged charging, a broken case, excessive tipping
or normal battery deteriorat ion. When the battery is
found in such condition, it is possible that high
charging voltage is caused by the faulty charging
system and therefore, charging and electrical systems
need to be checked. If there is a trouble in cranking
and its cause lies in the battery, it should be replaced.
I2RH011A0001-01

Downloaded from www.Manualslib.com manuals search engine 4-ii Table of Contents
Repair Instructions ..............................................4D-2Parking Brake Inspection and Adjustment ..........4D-2
Parking Brake Cable Removal and Installation ......................................................... 4D-3
Parking Brake Lever Removal and Installation ....4D-3
Specifications .... ...................................................4D-4
Tightening Torque Specifications ........................4D-4
ABS ........................................... .................4E-1
Precautions........................................................... 4E-1
Precautions in Diagnosing Troubles ................... 4E-1
Precautions in On-Vehicle Service...................... 4E-1
Precautions in Hydraulic Unit Operation Check ................................................................ 4E-1
General Description ............................................. 4E-2 ABS Description .................................................. 4E-2
ABS Hydraulic Unit / Control Module Assembly Description ....................................... 4E-2
CAN Communication System Description........... 4E-3
Schematic and Routing Diagram ........................ 4E-4 ABS Schematic ................................................... 4E-4
ABS Wiring Circuit Diagram ................................ 4E-5
Component Location ........... ................................ 4E-7
ABS Components Location ................................. 4E-7
Front Wheel Speed Sensor Components Location ............................................................ 4E-7
Rear Wheel Speed Sensor Components Location ............................................................ 4E-8
Diagnostic Information and Procedures ............ 4E-8 ABS Check .......................................................... 4E-8
ABS Warning Light Check................................. 4E-10
EBD Warning Light (Brake Warning Light) Check .............................................................. 4E-10
DTC Check........................................................ 4E-11
DTC Table ......................................................... 4E-11
DTC Clearance ................................................. 4E-12
Scan Tool Data ................................................. 4E-12
ABS Warning Light Does Not Come ON at Ignition Switch ON .......................................... 4E-13
ABS Warning Light Comes ON Steady ............. 4E-14
EBD Warning Light (Brake Warning Light) Comes ON Steady .......................................... 4E-15
Serial Data Link Circuit Check .......................... 4E-16
DTC C1021, C1022 / C1025, C1026 / C1031, C1032 / C1035, C1036: Right-Front / Left-
Front / Right-Rear / Left-Rear Wheel Speed
Sensor Circuit or Sensor Ring ........................ 4E-18
DTC C1041 / C1045 / C1051 / C1055, DTC C1042 / C1046 / C1052 / C1056: Right-Front
/ Left-Front / Right-Rear / Left-Rear Inlet
Solenoid Circuit, Right-Front / Left-Front /
Right-Rear / Left-Rear Outlet Solenoid
Circuit .............................................................. 4E-20
DTC C1057: Power Source Circuit ................... 4E-21
DTC C1061: ABS Pump Motor and/or Motor Driver Circuit ................................................... 4E-22
DTC C1063: Solenoid Valve Power Supply Driver Circuit ................................................... 4E-23
DTC C1071: ABS Control Module..................... 4E-24 DTC U1073: Control Module Communication
Bus Off ............................................................ 4E-25
DTC U1100: Lost Communication with ECM (Reception Error)............................................. 4E-27
Repair Instructions ............ ................................ 4E-28
ABS Hydraulic Unit Operati on Check................ 4E-28
ABS Hydraulic Unit / Control Module
Assembly Components ...... ............................. 4E-29
ABS Hydraulic Unit / Control Module
Assembly On-Vehicle Inspection .................... 4E-29
ABS Hydraulic Unit / Control Module
Assembly Removal and Inst allation ................ 4E-29
Front / Rear Wheel Speed Sensor On-Vehicle Inspection ........................................................ 4E-31
Front Wheel Speed Sensor Removal and Installation ....................................................... 4E-32
Front Wheel Speed Sensor Inspection ............. 4E-32
Rear Wheel Speed Sensor Removal and Installation ....................................................... 4E-33
Rear Wheel Speed Sensor Inspection .............. 4E-34
Front Wheel Encoder On-Veh icle Inspection .... 4E-34
Front wheel Enco der Removal and
Installation ....................................................... 4E-34
Rear Wheel Encoder On-Veh icle Inspection..... 4E-34
Rear Wheel Encoder Removal and Installation ....................................................... 4E-34
Specifications ..................... ................................ 4E-35
Tightening Torque Specifications ...................... 4E-35
Special Tools and Equipmen t ........................... 4E-35
Special Tool ...................................................... 4E-35
Electronic Stability Prog ram ...................4F-1
Precautions ........................................................... 4F-1
Precautions in Diagnosing Troubles ................... 4F-1
Precautions in On-Vehicle Service...................... 4F-1
Precautions in Hydraulic Unit Operation Check ................................................................ 4F-1
Precautions in Sensor Calibration ....................... 4F-1
Precautions in Speedometer Test or Other Tests ................................................................. 4F-2
General Description ............................................. 4F-2 Electronic Stability Program Description ............. 4F-2
Electronic Stability Program Construction ........... 4F-3
ESP® Hydraulic Unit / Control Module
Assembly Description........................................ 4F-5
Warning Lamp, Indicator Lamp Description ........ 4F-6
CAN Communication System Description........... 4F-6
CAN Communication System For Electronic Stability Program Description ............................ 4F-7
Schematic and Routing Diagram ........................ 4F-8 Electronic Stability Program Schematic .............. 4F-8
Electronic Stability Program Wiring Circuit Diagram............................................................. 4F-9
Component Location ............ ............................. 4F-11
Electronic Stability Program Component
Location........................................................... 4F-11
Diagnostic Information and Procedures .......... 4F-12 Electronic Stability Program System Check ...... 4F-12
ESP® Warning lamp Check .............................. 4F-14

Downloaded from www.Manualslib.com manuals search engine 4A-6 Brake Control System and Diagnosis:
Pedal pulsation (Pedal
pulsates when depressed
for braking)Damaged or loose wheel bearings
Replace wheel bearings.
Distorted steering knuckle or rear wheel
spindle Replace knuckle or rear wheel spindle.
Excessive disc lateral runout Check per instructions. If not within
specifications, replace or machine disc.
Parallelism between brake pad and disc
not within specifications Check per instructions. If not within
specifications, replace or machine disc.
Brake caliper piston sticking Repair as necessary.
Braking noise Worn or distorted brake pad Replace pads.
Loose front wheel bearings Replace wheel bearings.
Distorted backing plates or loose
mounting bolts Replace or retighten securing bolts.
Contact wear indicator to brake disc Replace brake pad.
Brake warning light lights
after engine start Parking brake applied
Release parking brake and check that brake
warning light turns off.
Insufficient amount of brake fluid Investigate leaky point, correct it and add
brake fluid.
Brake fluid leaking Investigate leaky point, correct it and add
brake fluid.
Brake warning light circuit faulty Repair circuit.
Malfunctioning EBD system Check system referring to “EBD Warning Light
(Brake Warning Light) Comes ON Steady in
Section 4E”.
Brake warning light turns
on when brake is applied Brake fluid leaking
Investigate leaky point, correct it and add
brake fluid.
Insufficient amount of brake fluid Investigate leaky point, correct it and add
brake fluid.
Brake warning light fails
to turn on even when
parking brake is applied Brake warning light circuit faulty
Replace bulb or repair circuit.
ABS warning light or
ESP
® warning light turns
on after engine start Malfunctioning ABS (ESP
®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light or
ESP
® warning light turns
on when brake is applied Malfunctioning ABS (ESP
®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light or
ESP
® warning light does
not turn on for 2 sec. after
ignition switch has turned
ON Bulb burnt out
Replace bulb.
Malfunctioning ABS (ESP ®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light flashes New ABS hydraulic unit / control module
assembly installed. Perform “ABS Hydraulic
Unit Operation Check
in Section 4E”.
Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 4A-8 Brake Control System and Diagnosis:
Excessive Pedal Travel InspectionS7RS0B4106003
1) Start engine.
2) Depress brake pedal a few times.
3) With brake pedal depressed with approximately 300 N (30 kg, 66 lbs) load, measure brake pedal to wall
(dash panel silencer) clearance “a”. If clearance “a”
is less than specification, the most possible cause is
air in lines. Should clearance “a” remain less than
specification even after bleeding of system, other
possible infrequent cause is booster push rod length
out of adjustment.
• Bleed brake system. Refer to “Air Bleeding of Brake System”.
Brake arm pedal to wall clearance “a”
When pedal depressed at 300 N (30 kg, 66 lbs):
over 75 mm (2.95 in.)
Brake Fluid Level InspectionS7RS0B4106004
1) Check master cylinder, reservoir and reservoir hose (if equipped) for crack, damage and brake fluid
leakage. If any faulty condition exists, correct or
replace.
2) Check that brake fluid level is between MAX and MIN marks on reservoir.
NOTE
Be sure to use particular brake fluid either as
indicated on reservoir cap of that vehicle or
recommended in owner’s manual which
comes along with that vehicle. Use of any
other fluid is strictly prohibited.
Fluid level should be between MIN and MAX
lines marked on reservoir.
When brake warning lamp lights sometimes
during driving, replenis h fluid to MAX level.
When fluid decreases quickly, inspect brake
system for leakage. Correct leaky points and
then refill to specified level.

CAUTION!
Do not use shock absorber fluid or any other
fluid which contains mineral oil. Do not use a
container which has been used for mineral oil
or a container which is wet from water.
Mineral oil will cause swelling and distortion
of rubber parts in hydraulic brake system and
water mixed into brake fluid will lower fluid
boiling point. Keep all fluid containers
capped to prevent contamination.

Stop Light Switch AdjustmentS7RS0B4106005
Adjustment should be made as follows. Pull up brake
pedal toward you and while holding it there, adjust
switch position so that clea rance between end of thread
and brake pedal is as specified. Then lock it by turning
clockwise.
Clearance between brake pedal and stop light switch
“a”: 1.2 – 2.2 mm (0.05 – 0.08 in.)
I6RS0C410005-02
I4RS0B410006-01
I4RS0A410007-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-2
General Description
ABS DescriptionS7RS0B4501001
The ABS (Antilock Brake System) controls the fluid
pressure applied to the wheel cylinder of each brake
from the master cylinder so that each wheel is not locked
even when hard braking is applied.
This ABS has also the following function.
While braking is applied, but before ABS control
becomes effective, braking force is distributed between
the front and rear so as to prevent the rear wheels from
being locked too early for better stability of the vehicle.
The main component parts of this ABS include the
following parts in addition to those of the conventional
brake system.
• Wheel speed sensor which senses revolution speed of each wheel and outputs its signal.
• ABS warning light which light s to inform abnormality
when system fails to operate properly.
• ABS hydraulic unit / cont rol module assembly is
incorporated ABS co ntrol module, ABS hydraulic unit
(actuator assembly), solenoid valve power supply
driver (transistor), solenoid valve driver (transistor),
pump motor driver (transistor).
– ABS control module which sends operation signal to ABS hydraulic unit to control fluid pressure
applied to each wheel cylinder based on signal
from each wheel speed sensor so as to prevent
wheel from locking.
– ABS hydraulic unit which operates according to signal from ABS control module to control fluid
pressure applied to wheel cylinder of each 4
wheels.
– Solenoid valve power supp ly driver (transistor)
which supplies power to solenoid valve in ABS
hydraulic unit.
– Solenoid valve driver (transistor) which controls each solenoid valves in ABS hydraulic unit.
– Pump motor driver (transistor) which supplies power to pump motor in ABS hydraulic unit.
This ABS is equipped with Electronic Brake force
Distribution (EBD) system that controls a fluid pressure
of rear wheels to best condition, which is the same
function as that of proportion ing valve, by the signal from
wheel sensor independently of change of load due to
load capacity and so on. An d if the EBD system fails to
operate properly, the brake warning light lights to inform
abnormality.
ABS Hydraulic Unit / Control Module Assembly
Description
S7RS0B4501002
ABS control module is a component of ABS hydraulic
unit / control module asse mbly and has the following
functions.
Self-Diagnosis Function
ABS control module diagnose s conditions of the system
component parts (whether or not there is any
abnormality) all the time and indicates the results
(warning of abnormality occurrence and DTC) through
the ABS warning light as described.
• When ignition switch is turned ON, ABS warning light lights for 2 seconds to check its circuit.
• When no abnormality has been detected (the system is in good condition), ABS warning light turns OFF
after 2 seconds.
• When an abnormality in th e system is detected, ABS
warning light lights and the area where that
abnormality lies is stored in the memory of EEPROM
in ABS control module.
1
I4RS0A450001-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-10
Problem symptom confirmation
Check if what the customer claimed in “Customer
Questionnaire” is actually found in the vehicle and if that
symptom is found, whether it is identified as a failure.
(This step should be shared with the customer if
possible.) Check warning lights related to brake system
referring to “EBD Warning Light (Brake Warning Light)
Check” and “ABS Warning Light Check”.
DTC check, record and clearance
Perform “DTC Check” proced ure, record it and then
clear it referring to “DTC Clearance”.
Recheck DTC referring to “DTC Check”.
When DTC which is recorded at DTC check procedure is
detected again after performi ng DTC clearance, go to
“Step 4: ABS Check: ” to proceed the diagnosis.
When DTC which is recorded at DTC check procedure is
not indicated anymore after performing DTC clearance,
ABS control module does not perform the system
diagnosis, or temporary abnormality may occur,
therefore go to “Step 2: Driving Test: ” to proceed the
diagnosis.
Step 2: Driving Test
Test drive the vehicle at 40 km/h for more than a minute
and check if any trouble symptom (such as abnormal
lighting of ABS warn ing light) exists.
If the malfunction DTC is co nfirmed again at ignition
switch ON, driving test as described is not necessary.
Proceed to Step 3.
Step 3: DTC Check
Recheck DTC referring to “DTC Check”.
Step 4: ABS Check
According to ABS Check for the DTC confirmation in
Step 3, locate the cause of the trouble, namely in a
sensor, switch, wire harness, connector, actuator
assembly or other part and repair or replace faulty parts.
Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible
cause referring to “Brakes Symptom Diagnosis in
Section 4A” and based on symptoms appearing on the
vehicle (symptom obtained through Steps 1 and 2 and
repair or replace faulty parts, if any).
Step 6: Check for Intermittent Problem
Check parts where an intermittent trouble is easy to
occur (e.g., wire harness, con nector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section
00” and related circuit of trouble code recorded in Step 1
to 3.
Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the
ABS is free from any abnormal conditions. If what has
been repaired is related to the malfunction DTC, clear
the DTC once referring to “DTC Clearance” and perform
test driving and confirm that no DTC is indicated.ABS Warning Light CheckS7RS0B4504002
1) Turn ignition switch ON.
2) Check that ABS warning light (1) comes ON for
about 2 seconds and then goes off.
If any faulty condition is found, advance to “ABS
Warning Light Does Not Come ON at Ignition Switch
ON” or “ABS Warning Light Comes ON Steady”.
EBD Warning Light (Brake Warning Light)
Check
S7RS0B4504003
NOTE
Perform this check on a level place.

1) Turn ignition switch ON with parking brake applied.
2) Check that EBD warning lig ht (brake warning light)
(1) is turned ON.
3) Release parking brake with ignition switch ON and check that EBD warning lig ht (brake warning light)
goes off.
If it doesn’t go off, go to “EBD Warning Light (Brake
Warning Light) Comes ON Steady”.
11
I4RS0A450007-01
BRAKE
1
I4RS0A450008-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-14
ABS Warning Light Comes ON SteadyS7RS0B4504009
Wiring Diagram
Refer to “ABS Warning Light Does Not Come ON at Ignition Switch ON”.
Circuit Description
Operation (ON/OFF) of ABS wa rning light is controlled by ABS contro l module through lamp driver module in
combination meter.
If the Antilock brake system is in good condition, ABS control module turns ABS warning lig ht 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 light is
turned ON continuously by ABS c ontrol module. Also, it is turned ON continuously by la mp driver module when the
connector of ABS control module is disconnected.
Troubleshooting 4 Check CAN communication circuit between combination
meter and ABS control module referring to “DTC U1073:
Control Module Communication Bus Off”.
Is CAN communication circuit in good condition? Go to Step 5.
Repair or replace.
5 1) Remove combination meter wit h ignition switch turned
OFF.
2) Check for proper connection to “RED/BLK” and “BLK/ ORN” wire of combinat ion meter connector.
3) If OK, turn ON ignition switch and measure voltage at “PPL/RED” wire of combi nation meter connector and
vehicle body ground.
Is it 10 – 14 V? Go to Step 6.
Repair power supply
circuit for combination
meter.
6 1) Measure resistance between “BLK/ORN” wire of combination meter connector and vehicle body ground.
Is resistance less than 2
Ω? Replace combination
meter.
“BLK/ORN” circuit open
or high resistance.
Step Action Yes No
Step
Action YesNo
1 1) Perform diagnostic trouble code check.
Is there any DTC(s)? Go to applicable DTC
diag. flow.
Go to Step 2.
2 Are main fuses for ABS pump motor and ABS solenoid in
good condition? Go to Step 3.
Replace fuse and check
circuit for short to
ground.
3 1) Turn ignition switch to OFF.
2) Disconnect ABS control module connector.
3) Check for proper connection to ABS control module connector at terminals “E03-7”, “E03-13” and “E03-26”.
4) If OK then turn ignition switch to ON position and measure voltage between terminal “E03-7” and vehicle
body ground.
Is it 10 – 14 V? Go to Step 4.
“GRN/ORN” circuit
open.
4 1) Turn ignition switch to OFF position. 2) Check for proper connection to ABS control module connector at terminals “E03-1” and “E03-14”.
3) If OK then turn ignition switch to ON position and measure voltage between each terminal of “E03-1”,
“E03-14” and vehicle body ground.
Are they 10 – 14 V? Go to Step 5.
“WHT/RED” and/or
“WHT/BLU” circuit
open.

Downloaded from www.Manualslib.com manuals search engine 4E-15 ABS:
EBD Warning Light (Brake Warning Light) Comes ON SteadyS7RS0B4504010
Wiring Diagram
Refer to “ABS Warning Light Does Not Come ON at Ignition Switch ON”.
Circuit Description
EBD warning light (brake warn ing light) is controlled by parking brake switch, brake fluid level switch and ABS
hydraulic unit / control module assembly throug h lamp driver module in combination meter.
EBD warning light turns ON when parki ng brake switch is ON and/or brake fluid level is lower than minimum level.
The information of parking brake switch and brake fluid leve l are transmitted from BCM to lamp driver module in
combination meter through CAN communication line.
Troubleshooting 5 1) Turn ignition switch to OFF and measure resistance
between each terminal of “E03-13”, “E03-26” and vehicle
body ground.
Is resistance less than 2
Ω? Go to Step 6. Ground circuit for ABS
hydraulic unit / control
module open or high
resistance.
6 Check CAN communication circuit between combination meter and ABS control module referring to “DTC U1073:
Control Module Communication Bus Off”.
Is CAN communication circuit in good condition? Substitute a known-
good combination meter
and recheck. If ABS
warning light remains
ON, substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.Repair or replace.
Step Action Yes No
Step
Action YesNo
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
replenish brake fluid.
2 1) Turn ignition switch to ON position. Does “ABS” warning light come on steady? Perform “ABS Warning
Light Comes ON
Steady” previously
outlined.Go to Step 3.
3 1) CAN communication circuit between combination meter, ABS hydraulic unit / control module and BCM referring to
“DTC U1073: Control Module Communication Bus Off”.
Is CAN communication circuit in good condition? Substitute a known-
good combination meter
and recheck. If ABS
warning light remains
ON, substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.Repair or replace.

Downloaded from www.Manualslib.com manuals search engine 4E-21 ABS:
DTC C1057: Power Source CircuitS7RS0B4504014
Wiring Diagram
DTC Detecting Condition
The ABS control module monitors the power source voltage at terminal “E03-14”. When the power source voltage
becomes extremely high or low while vehicle is running at more than 20 km/h (13 MPH), this DTC will be set. As soon
as the power source volta ge becomes normal, the ABS warning light will be turned off and the ABS control module will
return to normal operation, bu t the set DTC will be remain.
DTC Troubleshooting
[A]: ABS hydraulic unit / control module connector (viewed from terminal side) 2. Main fuse box
1. Battery 3. ABS hydraulic unit / control module assembly
E03-14WHT/BLU
1 2
3
BLK
BLK
E03-13
E03-26
[A]
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
12V
I6RS0C450011-01
Step
Action YesNo
1 Was “ABS Check” performed? Go to Step 2.Go to “ABS Check”.
2 1) Disconnect ABS hydraulic unit / control module connector with ignition switch turned OFF.
2) Check for proper connection to ABS hydraulic unit / control module connector at terminals “E03-14” and
“E03-13”.
3) If OK, then turn ignition switch to ON position and measure voltage between terminals “E03-14” and “E03-
13”.
Is voltage 9.7
± 0.3 V or more? Go to Step 5. Go to Step 3.
3 1) Turn ignition switch to OFF. 2) Check for proper connection to ABS hydraulic unit / control module connector at terminals “E03-13” and
“E03-26”.
3) If OK then turn ignition switch to ON and measure resistance between each terminal of “E03-13” and “E03-
26” and vehicle body ground.
Is resistance less than 2
Ω? Go to Step 4. “BLK” wire circuit in
open or high resistance.
4 1) Measure voltage between positive battery terminal and vehicle body ground with engine running.
Is voltage 9.7
± 0.3 V or more? Imperfect short between
“WHT/BLU” wire circuit
and body ground.
Check charging system
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.