Ford Electric Ranger 2001 Manual page 379

413-01-24
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST N: POWER LIMIT WARNING INDICATOR DOES NOT OPERATE OR STAYS ON
CONTINUOUSLY
N1 IDENTIFY SYMPTOM
NOTE: Verify no diagnostic trouble codes (DTCs) exist and the traction
battery is charged to full state of charge (SOC) before carrying out the
following test steps.
• With key ON, identify the symptom.
• Does the power limit warning indicator stay on continuously?
N2 CHECK OPERATION OF POWER LIMIT WARNING
INDICATOR
• Enter the interface adapter assembly (IAA) module active command
mode INDICATOR LAMP CONTROL III and set the active command
PWR LIMIT to ON.
• Does the power limit warning indicator illuminate?
N3 CHECK POWER LIMIT WARNING INDICATOR CONTROL
CIRCUIT
• Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes =
module disconnected.
• With key OFF, connect a jumper wire between BOB pin 8 and ground
(BOB pin 80).
• Does the power limit warning indicator illuminate?
N4 CHECK POWER LIMIT WARNING INDICATOR BULB
• With key OFF, remove and check the power limit warning indicator
bulb.
• Is the bulb OK?
N5 CHECK CIRCUIT 3400 (BR/LB) FOR OPEN
• With key OFF, disconnect instrument cluster C214 and measure the
resistance of the BR/LB wire between pin 3 on instrument cluster C214
and BOB pin 8.
• Is the resistance less than 5 ohms?
N6 CHECK CIRCUIT 3400 (BR/LB) FOR SHORT TO POWER
• With key ON, measure the voltage between BOB pin 8 and ground
(BOB pin 80).
• Is the voltage greater than 0 volts?
N7 CHECK POWER TO INSTRUMENT CLUSTER
• With key OFF, measure the voltage between pin 1 (LB wire), pin 12 (LB Yes =
wire) on instrument cluster C215 and ground.
• Is the voltage greater than 10 volts?
N8 CHECK INSTRUMENT CLUSTER
• Connect 104-Pin Breakout Box (BOB) to the IAA module and IAA
module C1945.
• With key OFF, disconnect instrument cluster C214 and measure the
resistance between BOB pin 8 and ground (BOB pin 80).
• Is the resistance greater than 10,000 ohms?
N9 CHECK CIRCUIT 3400 (BR/LB) FOR SHORT TO GROUND
• With key OFF, disconnect the IAA module from the BOB; leave BOB
connected to IAA module C1945.
• With key OFF, measure the resistance between BOB pin 8 and ground
(BOB pin 80).
• Is the resistance greater than 10,000 ohms?
Instrument Cluster
TEST STEP ACTION TO TAKE
GO to N8.
Yes =
No = GO to N2.
Yes = System OK. CHECK wiring
for intermittent connections.
No = GO to N3.
REPLACE the IAA module.
REFER to Section 412-04.
No = GO to N4.
Yes = GO to N5.
No = REPLACE the bulb.
GO to N6.
Yes =
No = REPAIR the BR/LB wire.
Yes = REPAIR the BR/LB wire.
GO to N7.
No =
REPLACE the instrument
cluster.
No = REPAIR the LB wire(s) in
question.
Yes = REPLACE the instrument
cluster.
GO to N9.
No =
Yes = REPLACE the IAA module.
REFER to Section 412-04.
No = REPAIR the BR/LB wire.
2001 Ranger EV, 01/2001
413-01-24