Suzuki XL7 2007 Service Manual page 1374

4E-24 ABS:
DTC C0131
DTC Descriptor
DTC C0131 00: ABS Pressure Circuit No Additional Information
DTC C0131 4B: ABS Pressure Circuit Calibration Not Learned
DTC C0131 5A: ABS Pressure Circuit Calibration Not Learned Plausibility Failure
Diagnostic Fault Information
Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
Circuit
ABS Pressure Circuit
Pressure Circuit Calibration Not Learned
Pressure Circuit Calibration Not Learned
Plausibility Failure
Circuit/System Description
The electronic brake control module (EBCM) uses input
from the brake pressure sensor for more accurate
control during a Vehicle Stability Enhancement System
(VSES) event.
Conditions for Running the DTC
• The ignition is ON.
• Ignition voltage is greater than 9.5 volts
Conditions for Setting the DTC
• Pressure signal does not correlate to estimated
pressure over time.
• Brake signal does not correlate to pressure signal.
• Signal is erratic and changes faster than physically
allowed.
Action Taken When the DTC Sets
• The EBCM disables the VSES and TCS for the
duration of the ignition cycle.
• The electronic stability control (ESC) telltale turns ON.
Conditions for Clearing the DTC
• The condition for setting the DTC is no longer present
and the DTC is cleared with a scan tool.
• The EBCM automatically clears the history DTC when
a current DTC is not detected in 100 consecutive drive
cycles.
Diagnostic Aids
The pressure sensor is integral to the brake pressure
modulator valve (BPMV). The pressure sensor is not
serviceable.
Inspect the brake pressure sensor contacts for proper
connections.
Short to Open/High
Ground Resistance
C0131 00 C0131 00
— —
— —
Reference Information
Schematic Reference
"Antilock Brake System Schematics"
Connector End View Reference
"Antilock Brake System Connector End Views"
Description and Operation Reference
"ABS Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
"Scan Tool Data List - Antilock Brake System" for EBCM
Circuit/System Testing
1. Apply and release brake pedal. Verify brake lamps
operate properly.
➢ If brake lamps do not operate properly, refer to
Symptoms - Lighting Systems.
2. Replace EBCM/brake pressure modulator valve
(BPMV) assembly.
Repair Instructions
NOTE
Always perform the "Diagnostic Repair
Verification - Vehicle Diagnostic Information:
" after completing the diagnostic procedure.
• "Electronic Brake Control Module Replacement"
• "Control Module References: " for EBCM
replacement, setup, and programming.
Repair Verification
"Diagnostic Repair Verification - Vehicle Diagnostic
Information: "
Signal
Short to Voltage
Performance
C0131 00
— C0131 4B
— C0131 5A
—