Ford Electric Ranger 2001 Manual page 667

414-03B-64
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC B2513 BLOWER (FAN) CIRCUIT FAILURE
A1 CHECK TRACTION BATTERY FANS FAULT STATUS
• With key ON, monitor battery control module (BCM) PIDs FLOW F
and RECIR F.
• Does the FLOW F PID or RECIR F PID indicate YES?
A2 CHECK FUSE AND POWER TO TRACTION BATTERY FAN
RELAYS AT TRACTION BATTERY SUPPORT TRAY
• Check 15A fuse 17 in the electric vehicle power distribution box
(EVPDB).
• With key OFF, disconnect traction battery support tray in-line C1939 and No =
connect 104-Pin Breakout Box (BOB) to in-line C1939M using Traction
Battery Low-Voltage Service Cord; do not connect Traction Battery
Low-Voltage Service Cord to in-line C1939F.
• With key OFF, measure the voltage between BOB pin 64 and ground
(BOB pin 65). (V > 10 volts)
• Is everything OK?
A3 CHECK GROUND TO TRACTION BATTERY FANS
• Disconnect the BOB from in-line C1939M, remove the traction battery,
and connect Traction Battery High-Voltage Lockout and Diagnostic Tool
to the traction battery high-voltage two-pin C3994M.
WARNING: The traction battery contains high-voltage
components and wiring. High-voltage insulated safety gloves and face
shield must be worn when carrying out the following steps. Failure to
follow this warning may result in severe personal injury or death.
• With key OFF, measure the resistance between pin 1 (BK wire) on
recirculation fan C1801 and ground (BCM case).
• Is the resistance less than 5 ohms?
A4 CHECK FLOW-THRU FAN POWER STATUS
NOTE: If an emergency power off (EPO) condition occurs, the fan power
will be disabled. If interface adapter assembly (IAA) module DTC B2517
Emergency Power Off System Faulted occurred, carry out the appropriate
diagnostic procedures before carrying out this test step. Refer to the IAA
Module DTC Index in Section 100-07.
• Enter BCM active command mode BCM PACKETED COMMANDS,
monitor BCM PID FAN FL, and set active command FAN FL to
ENABLE.
• Does the FAN FL PID indicate ENABLE?
A5 CHECK FLOW-THRU FAN FEEDBACK STATUS
NOTE: The vehicle may need to be lifted on a hoist to hear the flow-thru
fan operate.
• Enter BCM active command mode BCM PACKETED COMMANDS,
monitor BCM PID FLOWFBK, and set active command FAN FL to
ENABLE.
• Does the FLOWFBK PID indicate ENABLE?
(Continued)
High Voltage/Traction Battery — Nickel Metal Hydride
TEST STEP
414-03B-64
ACTION TO TAKE
Yes = If both PIDs indicate YES,
GO to A2.
If FLOW F PID indicates
YES, GO to A4.
If RECIR F PID indicates
YES, GO to A15.
No = System OK. CHECK wiring
for intermittent connections.
Yes = GO to A3.
REPAIR as necessary.
Yes = REPAIR circuit 554 (Y/BK
wire) between C1939F and
the traction battery fan relay
connectors.
No = REPAIR the BK wire.
Yes = GO to A5.
No = REPLACE the BCM.
GO to A6.
Yes =
If fan operates, GO to A12.
No =
If fan does not operate, GO
to A7.
2001 Ranger EV, 01/2001