Dodge Dakota (ND). Manual — part 89
*ABS VERIFICATION TEST — VER 1 (340)
Diagnostic Test
1.
*ABS VERIFICATION TEST — VER 1
Turn the ignition off.
Connect all previously disconnected components and connectors.
Make sure all accessories are turned off and the battery is fully charged.
With the scan tool, clear DTCs in all modules.
Cycle the ignition off for 10 seconds, then on.
With the scan tool, select View DTCs in the ABS module.
If any DTCs have reset, perform the appropriate diagnostic procedure before continuing with this test.
If there are no DTCs present, road test the vehicle above 40 m.p.h. for at least two minutes.
CAUTION: Make sure braking capability is available before road testing the vehicle. During the test drive,
perform several anti-lock braking stops.
With the scan tool, select View DTCs in the Anti-Lock Brake Module.
Are there any DTCs present?
Yes
>> Perform the appropriate diagnostic procedure(s).
No
>> Test Complete
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C1008–BRAKE FLUID LEVEL INPUT CIRCUIT HIGH (340)
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C1008–BRAKE FLUID LEVEL INPUT CIRCUIT HIGH (340) (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on and no system under voltage condition present.
•
Set Condition:
If the Brake Fluid Level Input is 80% of ignition voltage for more than 500 msec, the DTC will set.
Possible Causes
INTERMITTENT BRAKE FLUID LEVEL INPUT CIRCUIT HIGH DTC
(Z420) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
(B20) BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT OPEN OR HIGH RESISTANCE
BRAKE FLUID LEVEL SWITCH
ANTI-LOCK BRAKE MODULE
Diagnostic Test
1.
DTC IS ACTIVE
Turn the ignition on.
With the scan tool, clear DTCs.
Turn the ignition off.
Turn the ignition on.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Go To 6
2.
BRAKE FLUID LEVEL SWITCH
Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
NOTE: Check connector - Clean/repair as necessary.
Turn the ignition on.
With the scan tool, monitor the Brake Fluid Level Switch state.
Connect a jumper wire between the (B20) Brake Fluid Level Switch
Sense circuit and the (Z420) Ground circuit at the Brake Fluid Level
Switch harness connector.
NOTE: The Brake Fluid Level Switch state on the scan tool
should read Open with the harness disconnected and Closed with
the jumper wire in place.
Does the Brake Fluid Level Switch state display on the scan
tool as described?
Yes
>> Replace the Brake Fluid Level Switch in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No
>> Go To 3
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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C1008–BRAKE FLUID LEVEL INPUT CIRCUIT HIGH (340) (CONTINUED)
3.
(Z420) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
Using a 12–volt test light connected to 12 volts, check the (Z420)
Ground circuit at the Brake Fluid Level Switch harness connector.
NOTE: The test light should be illuminated and bright. Compare
the brightness to that of a direct connection to the battery.
Is the test light illuminated and bright?
Yes
>> Go To 4
No
>> Repair the (Z420) Ground circuit for an open circuit or high
resistance.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES/ELECTRICAL - DIAGNOSIS AND TESTING)
4.
(B20) BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Anti-lock Brake Module harness connector.
NOTE: Check connector - Clean/repair as necessary.
Measure the resistance of the (B20) Brake Fluid Level Switch Sense
circuit.
Is the resistance above 5.0 ohms?
Yes
>> Repair the (B20) Brake Fluid Level Switch Sense circuit
for an open circuit or high resistance.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES/ELECTRICAL - DIAGNOSIS AND TESTING)
No
>> Go To 5
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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