Dodge Nitro. Manual — part 149
ABS INTERMITTENT CONDITION
For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.
Diagnostic Test
1) PERFORM ABS INTERMITTENT CONDITION TEST
Refer to any Technical Service Bulletins (TSBs) that may apply.
Review the scan tool Environmental Data (EV Data). If possible, try to duplicate the conditions under
which the DTC set.
Turn the ignition off.
Visually inspect the related wire harness. Disconnect all the related harness connectors. Look for any
chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals.
Wiggle the wires while checking for shorts and open circuits.
Perform a voltage drop test on the related circuits between the suspected inoperative component and the
Anti-Lock Brake Module.
Inspect and clean all PCM, ABS, engine, and chassis grounds that are related to the most current DTC.
If numerous trouble codes were set, use a wire schematic and look for any common ground or supply
circuits
For any Relay DTCs, actuate the Relay with the scan tool and wiggle the related wire harness to try to
interrupt the actuation.
Use the scan tool to perform a System Test if one applies to failing component.
A co-pilot, data recorder, or lab scope should be used to help diagnose intermittent conditions.
Were any problems found during the above inspections?
Yes
NOTE:
The conditions that set the DTC are not present at this time. The following
list may help in identifying the intermittent condition.
WARNING:
When the engine is operating, do not stand in direct line with the fan.
Do not put your hands near the pulleys, belts, or fan. Do not wear
loose clothing. Failure to follow these instructions can result in
personal injury or death.
2007 Dodge Nitro R/T
2007 BRAKES ABS - Electrical Diagnostics - Nitro
Perform the necessary repairs.
Perform ABS VERIFICATION TEST.
No
Test Complete.
C1008-BRAKE FLUID LEVEL CIRCUIT HIGH
2007 Dodge Nitro R/T
2007 BRAKES ABS - Electrical Diagnostics - Nitro
Fig. 1: Brake Fluid Level Circuit Schematic
Courtesy of CHRYSLER LLC
For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.
When Monitored:
2007 Dodge Nitro R/T
2007 BRAKES ABS - Electrical Diagnostics - Nitro
With the ignition on.
Set Condition:
When the Totally Integrated Power Module indicates that the Brake Fluid Level Circuit is open and
greater than 4.9 volts for more then 5 seconds.
Diagnostic Test
1) BRAKE FLUID LEVEL SWITCH SIGNAL VOLTAGE ABOVE 4.9 VOLTS
Turn the ignition on.
With the scan tool, read Brake Fluid Level Switch Signal voltage.
Is the voltage above 4.9 volts?
Yes
Go to 2).
No
Refer to the INTERMITTENT CONDITION diagnostic procedure.
Refer to the ABS INTERMITTENT CONDITION.
2) BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE
Possible Causes
(B20) BRAKE FLUID LEVEL SWITCH SIGNAL CIRCUIT OPEN
BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE
(Z905) SENSOR GROUND CIRCUIT OPEN
TOTALLY INTEGRATED POWER MODULE
NOTE:
This DTC must be active for the results of this test to be valid.
2007 Dodge Nitro R/T
2007 BRAKES ABS - Electrical Diagnostics - Nitro
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