Ford Electric Ranger 2001 Manual page 381

413-01-26
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST Q: ELECTRICAL HAZARD WARNING INDICATOR DOES NOT OPERATE OR STAYS ON
CONTINUOUSLY
Q1 IDENTIFY SYMPTOM
NOTE: Verify no diagnostic trouble codes (DTCs) exist and the vehicle is
capable of charging before carrying out the following test steps.
• With key ON, identify the symptom.
• Does the electrical hazard warning indicator stay on continuously?
Q2 CHECK OPERATION OF ELECTRICAL HAZARD WARNING
INDICATOR
• Enter the interface adapter assembly (IAA) module active command
mode INDICATOR LAMP CONTROL III and set the active command
HAZARD to ON.
• Does the electrical hazard warning indicator illuminate?
Q3 CHECK ELECTRICAL HAZARD 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 13 and ground
(BOB pin 80).
• Does the electrical hazard warning indicator illuminate?
Q4 CHECK ELECTRICAL HAZARD WARNING INDICATOR LED
• With key OFF, remove and check the electrical hazard warning indicator
LED.
• Is the LED OK?
Q5 CHECK CIRCUIT 3407 (R/W) FOR OPEN
• With key OFF, disconnect instrument cluster C214 and measure the
resistance of the R/W wire between pin 9 on instrument cluster C214 and
BOB pin 13.
• Is the resistance less than 5 ohms?
Q6 CHECK CIRCUIT 3407 (R/W) FOR SHORT TO POWER
• With key ON, measure the voltage between BOB pin 13 and ground
(BOB pin 80).
• Is the voltage greater than 0 volts?
Q7 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?
Q8 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 13 and ground (BOB pin 80).
• Is the resistance greater than 10,000 ohms?
Q9 CHECK CIRCUIT 3407 (R/W) 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 13 and ground
(BOB pin 80).
• Is the resistance greater than 10,000 ohms?
Instrument Cluster
TEST STEP ACTION TO TAKE
GO to Q8.
Yes =
No = GO to Q2.
Yes = System OK. CHECK wiring
for intermittent connections.
GO to Q3.
No =
REPLACE the IAA module.
REFER to Section 412-04.
No = GO to Q4.
GO to Q5.
Yes =
No = REPLACE the bulb.
GO to Q6.
Yes =
No = REPAIR the R/W wire.
Yes = REPAIR the R/W wire.
GO to Q7.
No =
REPLACE the instrument
cluster.
No = REPAIR the LB wire(s) in
question.
Yes = REPLACE the instrument
cluster.
GO to Q9.
No =
Yes = REPLACE the IAA module.
REFER to Section 412-04.
No = REPAIR the R/W wire.
2001 Ranger EV, 01/2001
413-01-26