Jeep WG Grand Cherokee 2002, Руководство по обслуживанию

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Symptom:
BRAKE FLUID LEVEL SWITCH
When Monitored and Set Condition:
BRAKE FLUID LEVEL SWITCH
When Monitored: Ignition on, every 7 milliseconds (ms).
Set Condition: The DTC will be set when the Brake Fluid Level Switch Sense circuit is
shorted to ground (below approximately 1 volt for 70 milliseconds) or is open or shorted to
voltage (above 4 volts for 70 milliseconds).
POSSIBLE CAUSES
LOW FLUID LEVEL OR SWITCH DISCONNECTED
BRAKE FLUID LEVEL SWITCH RESISTANCE OUT OF SPECIFICATION
BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT SHORTED TO BATTERY
BRAKE FLUID LEVEL SWITCH SENSE OR GROUND CIRCUIT OPEN
CAB - SENSE CIRCUIT OPEN
BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT SHORTED TO GROUND
BRAKE FLUID LEVEL SWITCH SENSE AND GROUND CIRCUITS SHORTED TOGETHER
CAB-INTERNAL SHORT
INTERMITTENT DTC
TEST ACTION APPLICABILITY
1 Inspect the Brake Fluid Level in the Master Cylinder Reservoir.
Check connection to Brake Fluid Level Switch.
Is the Brake Fluid Level Low or the Switch disconnected? All
Yes
→
Fill the brake fluid reservoir or reconnect as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→
Go To 2
2 Turn the ignition off.
Disconnect the Brake Fluid Level Switch connector.
Note: Check connector - Clean/repair as necessary.
Measure resistance of the Brake Fluid Level Switch.
Is the resistance between 990 and 1010 ohms? All
Yes
→
Go To 3
No
→
Replace Brake Fluid Level Switch.
Perform ABS VERIFICATION TEST - VER 1.
22
BRAKES (CAB)
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