Dodge ram truck 3500 1996 Service Manual page 240

5 - 56 BRAKES
D I A G N O S I S A N D T E S T I N G (Continued)
B R
Step Action
Yes
No
9
To verify if the DTC is related to an intermittent fault,
the fault code should be erased from the CAB's
memory. Refer to the RWAL DIAGNOSTIC
TROUBLE CODE section of this group and erase
the DTC.Turn the ignition key to the run position.
• Did both the brake warning lamp and ABS
warning lamp illuminate for a few seconds and then
go out?
Perform RWAL
DIAGNOSTIC
PROCEDURES TEST
2.
Perform step 10.
10 Recheck the RWAL system for DTCs. Refer to the
RWAL DIAGNOSTIC CONNECTOR LOCATION
section and the RWAL DIAGNOSTIC TROUBLE
CODE section in this group. Record the DTC before
proceeding.
• Did the same DTC that was recorded in step 6
reappear?
Perform RWAL
DIAGNOSTIC
PROCEDURES TEST
7.
The code that was
generated in step 6
does not have
diagnostic priority over
the DTC recorded in
this test. Perform
RWAL DIAGNOSTIC
PROCEDURES TEST
7 for the code
identified in this test
first, and then verify
the repair.
11 • Have you initiated the self diagnostic program? Record the DTC and
perform step 7.
Perform step 12.
12 Turn the ignition key to the OFF position.Disconnect
the CAB 14-way connector and leave disconnected
for 5 seconds.Reconnect the CAB 14-way connector.
Turn the ignition switch to the RUN position.
• Is/are the warning lamp(s) still flashing?
Perform step 13.
Perform step 2.
13 Turn the ignition key to the OFF position. Disconnect
and inspect the CAB 14-way connector for
indications of poor connections.
• Are there any connections that appear
inadequate?
Repair as necessary
and perform the
Verification Test.
Perform step * *
14 Connect a voltmeter between terminal 3 and
ground.Turn the ignition key to the RUN
position.Perform a wiggle test on the RWAL wiring
harness while observing the voltmeter.
• Did the voltage remain steady at 9 volts or
greater?
Perform step 15. Repair the ignition feea
circuit for an
intermittent connection
and perform the
Verification Test.
15 Turn the ignition key to the OFF position. Connect an
ohmmeter between terminal 10 and ground. Perform
a wiggle test on the RWAL wiring harness while
observing the ohmmeter.
© Is the resistance steady at less than 1 ohm?
Perform step 16. Repair the ground
circuit for an
intermittent connection
and perform the
Verification Test.
16 Connect an ohmmeter between terminal 12 and
ground.Perform a wiggle test on the RWAL wiring
harness while observing the ohmmeter.
• Is the resistance greater then 100K and steady?
Replace the RWAL
module and perform
the Verification Test.
Repair the diagnostic
terminal circuit for an
. intermittent short to
ground and perform
the Verification Test.