Dodge ram truck 3500 1996 Service Manual page 239

B R
BRAKES 5 - 1 5
DIAGNOSIS AND TESTING (Continued)
NOTE; If either warning lamp is illuminated, a DTC
should have been generated. Certain DTCs are
erased when the ignition key is turned to OFF. Do
not turn the ignition key OFF until you have
recorded the DTC. Refer to RWAL SYSTEM SELF
DIAGNOSIS for instructions on retrieving any DTC.
RWAL DIAGNOSTIC PROCEDURES—TEST 1
RWAL DIAGNOSIS must be performed before
beginning this diagnostic test procedure.
This procedure starts with the brake warning lamp
and/or ABS" warning lamp illuminated, flashing, or
not coming on at all. Do not attempt to perform this
test without first performing RWAL DIAGNOSIS. I f
you have arrived at this' procedure from RWAL
DIAGNOSIS, make sure you do not turn the ignition
key OFF prior to recording the DTC.
Step Action Yes
No
1
RWAL DIAGNOSIS must be performed before
beginning this diagnostic test procedure.
• Has RWAL DIAGNOSIS test been performed?
Perform step 2.
Perform RWAL
DIAGNOSIS.
2 The ignition switch should be in the run position prior
to starting.
© Are both brake warning and ABS warning lamps
illuminated?
Perform step 6.
Perform step 3.
3 © Is the ABS warning lamp illuminated only? Perform RWAL
DIAGNOSTIC
PROCEDURES TEST
3.
Perform step 4.
4
© Is the brake warning lamp illuminated only? Perform RWAL
DIAGNOSTIC
PROCEDURE TEST
4.
Perform step 5.
5 • Are either the brake warning lamp or ABS warning
lamp flashing?
Perform step 11.
Perform RWAL
DIAGNOSTIC
PROCEDURES TES
5.
6 Check the RWAL system for a DTC. Refer to the
RWAL DIAGNOSTIC CONNECTOR LOCATION
section and the RWAL DIAGNOSTIC TROUBLE
CODES section in this group. Record the DTC
before proceeding.
© Were you able to retrieve a DTC from the CAB's
memory?
Perform step 7.
Perform RWAL
DIAGNOSTIC
PROCEDURES TEST
6.
7 • Was DTC 9 or 11 recorded? Perform RWAL
DIAGNOSTIC
PROCEDURES TEST
7.
Perform step 8.
8 • Were you required to perform the Test Driving
RWAL Complaint Vehicle procedure prior to
beginning RWAL DIAGNOSTIC PROCEDURES
TEST 1?
Perform RWAL
DIAGNOSTIC
PROCEDURES TEST
7.
Perform step 9.