Ford Electric Ranger 2001 Manual page 376

413-01-21
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: CHARGE INDICATOR DOES NOT OPERATE OR STAYS ON CONTINUOUSLY
• With key OFF, connect a jumper wire between BOB pin 10 and ground
(BOB pin 80).
• Does the charge indicator illuminate?
K4 CHECK CHARGE INDICATOR BULB
• With key OFF, remove and check the charge indicator bulb.
• Is the bulb OK?
K5 CHECK CIRCUIT 3041 (BK) FOR OPEN
• With key OFF, disconnect instrument cluster C214 and measure the
resistance of the BK wire between pin 7 on instrument cluster C214 and
BOB pin 10.
• Is the resistance less than 5 ohms?
K6 CHECK CIRCUIT 3041 (BK) FOR SHORT TO POWER
• With key ON, measure the voltage between BOB pin 9 and ground
(BOB pin 80).
• Is the voltage greater than 0 volts?
K7 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?
K8 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 10 and ground (BOB pin 80).
• Is the resistance greater than 10,000 ohms?
K9 CHECK CIRCUIT 3041 (BK) 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 10 and ground
(BOB pin 80).
• Is the resistance greater than 10,000 ohms?
PINPOINT TEST L: ECONOMY MODE INDICATOR DOES NOT OPERATE OR STAYS ON CONTINUOUSLY
L1 IDENTIFY SYMPTOM
• With key ON, identify the symptom.
• Does the economy mode indicator stay on continuously?
L2 CHECK OPERATION OF ECONOMY MODE INDICATOR
• Enter the interface adapter assembly (IAA) module active command
mode INDICATOR LAMP CONTROL and set the active command
ECON MODE to ON.
• Does the economy mode indicator illuminate?
L3 CHECK ECONOMY MODE INDICATOR CONTROL CIRCUIT
• Connect 104-Pin Breakout Box (BOB) to interface adapter assembly
(IAA) module C1945; leave IAA module disconnected.
• With key OFF, connect a jumper wire between BOB pin 17 and ground
(BOB pin 80).
• Does the economy mode indicator illuminate?
L4 CHECK ECONOMY MODE INDICATOR BULB
(Continued)
Instrument Cluster
TEST STEP
TEST STEP
ACTION TO TAKE
No = GO to K4.
GO to K5.
Yes =
No = REPLACE the bulb.
Yes = GO to K6.
No = REPAIR the BK wire.
Yes = REPAIR the BK wire.
No = GO to K7.
REPLACE the instrument
cluster.
No = REPAIR the LB wire(s) in
question.
Yes = REPLACE the instrument
cluster.
No = GO to K9.
Yes = REPLACE the IAA module.
REFER to Section 412-04.
No = REPAIR the BK wire.
ACTION TO TAKE
GO to L9.
Yes =
No = GO to L2.
Yes = System OK. CHECK wiring
for intermittent connections.
No = GO to L3.
Yes = REPLACE the IAA module.
REFER to Section 412-04.
GO to L4.
No =
2001 Ranger EV, 01/2001
413-01-21