Dodge Ram 2004 Service Manual page 462

INSTRUMENT CLUSTER
*BRAKE WARNING INDICATOR INOPERATIVE —
TEST
4 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Connect a jumper wire between cavity 1 and cavity 2.
Turn the ignition on.
Does the Brake warning indicator illuminate?
Yes → Replace the Brake Fluid Level Switch in accordance with the
→ Go To 5
No
5 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Measure the resistance between ground and the Brake Fluid Level Switch Ground
circuit.
Is the resistance above 5.0 ohms?
Yes → Repair the Brake Fluid Level Switch Ground circuit for an open.
→ Go To 6
No
6 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Disconnect the ABS Module harness connector, (C2 for ABS equipped vehicles).
Measure the resistance of the Brake Fluid Level Switch Sense circuit.
Is the resistance above 5.0 ohms?
Yes → Repair the Brake Fluid Level Switch Sense circuit for an open.
→ Go To 7
No
7 Turn the ignition off.
Disconnect the CAB harness connector, (C2 for ABS equipped vehicles).
Connect a jumper wire between the Brake Fluid Level Switch Sense circuit and
ground.
With the DRBIII in Inputs/Outputs, read the Fluid Level Switch state.
Does the DRBIII display Closed ?
Yes → Replace and configure the Instrument Cluster in accordance with
→ Replace the CAB Module in accordance with the Service Informa-
No
ACTION
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
tion.
Perform BODY VERIFICATION TEST - VER 1.
448
Continued
APPLICABILITY
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All
All
All