Ford Electric Ranger 2001 Manual page 814

418-00-6
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST B: THE MODULE DOES NOT RESPOND TO THE NGS TESTER — BATTERY CONTROL
MODULE (BCM)
• With key OFF, disconnect in-line C136 and inspect C136M and C136F
for damage.
• With key OFF, measure the resistance of the T/O wire between pin 25
on in-line C136M and BOB pin 59.
• With key OFF, measure the resistance of the PK/LB wire between pin 21
on in-line C136M and BOB pin 58.
• Are the connectors OK and are the resistances less than 5 ohms?
B4 CHECK CIRCUITS 914 (T/O), 915 (PK/LB), 787 (PK/BK), 787
(PK/BK), 570 (BK/W), AND 57 (BK) BETWEEN IN-LINE C1939F AND
BATTERY CONTROL MODULE (BCM) C1986, C1987 FOR OPEN(S)
WARNING: The traction battery contains high-voltage
components. High-voltage insulated safety gloves and face shield must
be worn when performing the following steps. Failure to follow this
warning may result in severe personal injury or death.
• Remove the traction battery.
NOTE: There are two power feeds to the BCM with the same circuit
number/wire color; circuit 787 (PK/BK wire). When performing continuity
tests for these wires, pay close attention to the indicated pins.
• With key OFF, disconnect BCM C1986, C1987 and inspect for damage.
• With key OFF, measure the resistance of the T/O wire between pin 21
on BCM C1987 and BOB pin 59.
• With key OFF, measure the resistance of the PK/LB wire between pin 20
on BCM C1987 and BOB pin 58.
• With key OFF, measure the resistance of the PK/BK wire between pin
10 on BCM C1986 and BOB pin 53.
• With key OFF, measure the resistance of the PK/BK wire between pin
20 on BCM C1986 and BOB pin 45.
• With key OFF, measure the resistance of the BK/W wire between pins 4,
5 on BCM C1986 and BOB pin 37.
• With key OFF, measure the resistance of the BK wire between pin 33 on
BCM C1986 and BOB pin 1.
• Is the connector OK and are the resistances less than 5 ohms?
PINPOINT TEST C: THE MODULE DOES NOT RESPOND TO THE NGS TESTER — INTERFACE
ADAPTER ASSEMBLY (IAA) MODULE
C1 CHECK FUSE, POWER, AND GROUND TO INTERFACE
ADAPTER ASSEMBLY (IAA) MODULE
• Check 10A fuse 9 in the electric vehicle power distribution box
(EVPDB).
(Continued)
Module Communications Network
TEST STEP
TEST STEP
ACTION TO TAKE
Yes = REPAIR the wire in
question between in-line
C136F and DLC C209.
REFER to Communication
Circuit Wiring Repair —
Module in Section 418-00
of the 2001 Ranger
Workshop Manual.
No = REPAIR the connectors
and/or the wire in question
between in-line C1939M and
in-line C136M. REFER to
Communication Circuit
Wiring Repair — Module in
Section 418-00 of the 2001
Ranger Workshop Manual.
Yes = REPLACE the BCM.
REFER to Section 414-03A
or Section 414-03B.
No = REPAIR the connectors
and/or the wire in question
between in-line C1939F and
BCM C1986 or C1987.
REFER to Communication
Circuit Wiring Repair —
Module in Section 418-00
of the 2001 Ranger
Workshop Manual for
repair of circuit 914 (T/O
wire) and circuit 915
(PK/LB).
ACTION TO TAKE
Yes = GO to C2.
2001 Ranger EV, 01/2001
418-00-6