Aviator 2WD V8-4.6L DOHC (2003)
Wheel Speed Sensor: Customer Interest
Brakes - ABS Lamp ON/DTC's C1235/C1236/C1237 Set
Article No.
03-26-3
01/12/04
BRAKES - ABS LAMP ILLUMINATED AND DTC
C1235, C1236, C1237 - VEHICLES WITH
DIFFERENTIAL - MOUNTED REAR WHEEL SPEED
SENSOR
FORD:
2002-2004 EXPLORER
LINCOLN:
20Q3-2004 AVIATOR
MERCURY:
2002-2004 MOUNTAINEER
ISSUE
Some vehicles may exhibit an Anti-Lock Brake System (ABS) warning lamp illuminated with Diagnostic Trouble Codes (DTCs) C1235, C1236 and/or
C1237 (Wheel Speed RR Input Signal Missing/Wheel Speed LR Input Signal Missing/Rear Wheel Speed Sensor Output Failure) stored in memory. This
may be due to an intermittently functioning differential-mounted Rear Wheel Speed Sensor.
ACTION
To service, refer to the following diagnostic and repair procedure.
NOTE
THIS TSB ONLY APPLIES TO VEHICLES WITH DTCS C1235, C1236 AND/OR C1237. FOR ALL OTHER DTC'S, REFER TO THE
APPROPRIATE WORKSHOP MANUAL.
NOTE
THIS TSB DOES NOT APPLY TO VEHICLES EQUIPPED WITH ADVANCETRAC (STABILITY ASSIST / IVD).
SERVICE PROCEDURE
1.
Retrieve Continuous ABS DTC(s).
2.
If C1235, C1236 and/or C1237 are present, turn ignition OFF and replace the differential-mounted Rear Wheel Speed Sensor.
a.
Raise vehicle on hoist so that the bottom of the rear differential is at head level.