Suzuki Swift Sport 2004 User Manual

Electronic Stability Program: 4F-31
DTC Troubleshooting
DTC 1020: Master Cylinder Pressure Sensor Power Supply Failure
S7RS0B4604028
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
1) Turn ignition switch to OFF position.
2) Check for proper connection from harness to ESP® control module.
3) If OK, substitute an ESP® hydraulic unit / control module assembly with correct part number.
4) Recheck system.
Step Action Yes No
1 Was “Electronic Stability Program Check” performed? Go to Step 2. Go to “Electronic
Stability Program
System Check”.
2 Check brake fluid level
1) Check brake fluid level in reservoir.
Is brake fluid level upper than the minimum level?
Go to Step 3. Replenish brake fluid to
reservoir.
3 DTC check for ESP®
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP®.
Is DTC U1073 and/or U1140 detected?
Go to applicable diag.
flow.
Go to Step 3.
4 Check brake fluid level switch
1) Turn ignition switch to OFF position.
2) Disconnect brake fluid level switch connector.
3) Check for proper connection at each terminal of brake
fluid level switch connector.
4) If OK, then check brake fluid level switch referring to
“Brake Fluid Level Switch Inspection in Section 9C”.
Is check result OK?
Go to Step 5. Replace brake fluid
level switch.
5 Check brake fluid level switch circuit
1) Disconnect BCM connector.
2) Check for proper connection to BCM connector at “E46-
5” terminal.
3) If OK, then check resistance between “E46-5” terminal
and vehicle body ground.
Is resistance infinity?
Go to Step 6. “BLKL/RED” wire circuit
is shorted to ground.
6 Check BCM
1) Connect brake fluid level switch connector and BCM
connector.
2) Check voltage at “E46-5” terminal of BCM referring to
“Inspection of BCM and its Circuits in Section 10B”.
Is voltage in good condition?
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
Check BCM power and
ground circuit. If circuit
is OK, substitute a
known-good BCM and
recheck.
DTC Detecting Condition Trouble Area
Power supply voltage to master cylinder pressure sensor
in ESP® hydraulic unit / control module assembly is out of
specification.
• ESP® control module

Suzuki Swift Sport 2004 Specifications

General

Brand	Suzuki
Model	Swift Sport 2004
Category	Automobile
Language	English