Ford 2001 Ranger, Manual

Page: 171 / 1218

206-09-11 206-09-11 Anti-Lock Control
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST F: DTC U2015 SIGNAL LINK FAULT (NON SCP)
TEST STEP ACTION TO TAKE
F1 CHECK ANTI-LOCK BRAKE SYSTEM (ABS) FOR DIAGNOSTIC
TROUBLE CODES (DTCs)
NOTE: The red brake warning indicator and malfunction indicator lamp Yes = REFER to
Symptom Chart.
(MIL) illuminate and DTC U2015 Signal Link Fault (Non SCP) occurs if
the ignition key is cycled OFF/ON before the anti-lock brake control
module completes its pump check. If this occurs, clear traction inverter
module (TIM) DTCs, turn the ignition key to the ON position, and wait for
the completion of the ABS pump check. Continue with this pinpoint test
only if TIM DTC U2015 occurs after the completion of the ABS pump
check.
•
Retrieve ABS DTCs.
•
Did any ABS DTCs occur?
No = GO to F2.
F2 CHECK ABS ACTIVE LINE INPUT SIGNAL STATUS
•
Monitor TIM PID ABS SIG. Yes = GO to F10.
•
Turn the ignition key to the START position. No = If ABS SIG PID indicates
•
Does the ABS SIG PID indicate ACTIVE and return to notACT?
ACTIVE at all times, GO to
F3.
If ABS SIG PID indicates
notACT at all times, GO to
F8.
F3 CHECK FUSE
•
Check 5A fuse 24 in the electric vehicle power distribution box Yes = GO to F4.
(EVPDB).
•
Is the fuse OK?
No = REPLACE the fuse.
F4 CHECK CIRCUITS 491 (O/LB) (ABS ACTIVE LINE) FOR
OPEN(S)
•
Connect 104-Pin Breakout Box (BOB) to TIM C4998, C4999 using the Yes = GO to F5.
BCM/TIM BOB Adapter and Overlay; leave the TIM disconnected.
•
With key OFF, remove 5A fuse 24 from the EVPDB and measure the No = REPAIR the wire(s) in
resistance of the O/LB wire between fuse 24 connector and BOB pin B6. question.
•
With key OFF, disconnect pump motor C1944 and measure the
resistance of the O/LB wire between fuse 24 connector and pump motor
C1944.
•
Are the resistances less than 5 ohms?
F5 CHECK TIM FOR OPEN
•
With key OFF, disconnect the BOB from TIM C4998, C4999; leave Yes = REPLACE the TIM. REFER
BOB connected to the TIM. to Section 303-14.
•
With key OFF, measure the resistance between BOB pin B6 and ground No = GO to F6.
(BOB pin A29).
•
Is the resistance greater than 80,000 ohms?
F6 CHECK CIRCUITS 491 (O/LB) (ABS ACTIVE LINE) FOR
SHORT(S) TO POWER
•
With key OFF, disconnect BOB from TIM; connect BOB to TIM C4998, Yes = REPAIR the wire(s) in
C4999. question.
•
With key ON, measure the voltage between BOB pin B6 and ground No = GO to F7.
(BOB pin A29).
•
With key ON, measure the voltage between the O/LB wire on pump
motor C1944 and ground.
•
Are any of the voltages greater than 0 volts?
F7 CHECK TIM FOR SHORT TO POWER
•
With key OFF, connect BOB to TIM; leave BOB connected to TIM Yes = REPLACE the TIM. REFER
C4998, C4999. to Section 303-14.
(Continued)
2001 Ranger EV, 01/2001