Suzuki XL7 2007 Service Manual page 1388

4E-38 ABS:
DTC C0900
DTC Descriptor
DTC C0900: Device Voltage High
Diagnostic Fault Information
NOTE
Always perform the "Diagnostic System
Check - Vehicle Diagnostic Information: "
prior to using this diagnostic procedure.
Circuit/System Description
The electronic brake control module (EBCM) monitors
the battery voltage. If the voltage level is too high,
damage may result in the system. When a high voltage
condition is detected the EBCM turns OFF the system
relay which removes battery voltage from the solenoid
valves and pump motor.
Conditions for Running the DTC
Ignition is ON.
Conditions for Setting the DTC
The system voltage is greater than 17 volts for 10 msec.
Action Taken When the DTC Sets
• ABS disabled if ignition voltage exceeds 17 volts.
• The Antilock Brake System (ABS) indicator and
engine traction (ETS)/ brake warning lamp turns ON if
voltage exceeds 17 volts.
Conditions for Clearing the DTC
• The condition for the DTC is no longer present.
• The EBCM automatically clears the history DTC when
a current DTC is not detected in 100 consecutive drive
cycles.
Diagnostic Aids
Test the charging system. Refer to "Battery Inspection/
Test: " and "Charging System Test: ".
Reference Information
Schematic Reference
"Antilock Brake System Schematics"
Connector End View Reference
"Antilock Brake System Connector End Views"
Description and Operation
"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. Measure the voltage at the battery terminals.
2. With scan tool, read the battery voltage in the EBCM
data list.
➢ If more than 17 volt, test the check the charging
system.
3. Go to "Battery Inspection/Test: " and "Charging
System Test: ".
Repair Instructions
Perform the "Diagnostic System Check - Vehicle
Diagnostic Information: " After completing the diagnostic
procedure.
• "Control Module References: " for EBCM
replacement, setup, and programming
• "Generator Replacement: "
Repair Verification
"Diagnostic Repair Verification - Vehicle Diagnostic
Information: "
Symptoms - Antilock Brake System
NOTE
The following steps must be completed
before using the symptom tables.
1. Perform the "Diagnostic System Check -
Vehicle Diagnostic Information: " in
Vehicle DTC Information before using the
symptom tables in order to verify that all
of the following are true:
– There are no DTCs set.
– The control modules can communicate
via the serial data link.
2. Review the system operation in order to
familiarize yourself with the system
functions. Refer to "ABS Description and
Operation".
Visual/Physical Inspection
• Inspect for aftermarket devices which could affect the
operation of the antilock brake system (ABS). Refer to
"Checking Aftermarket Accessories: " in Wiring
Systems.
• Inspect the easily accessible or visible system
components for obvious damage or conditions which
could cause the symptom.
• Inspect the master cylinder reservoir for the proper
fluid level.