Ford Electric Ranger 2001 Manual page 380

413-01-25
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST P: LOW OIL PRESSURE INDICATOR DOES NOT OPERATE OR STAYS ON
CONTINUOUSLY
P1 IDENTIFY SYMPTOM
NOTE: Verify no diagnostic trouble codes (DTCs) exist and there is no
low oil pressure condition within the motor/transaxle before carrying out
the following test steps.
• With key ON, identify the symptom.
• Does the low oil pressure indicator stay on continuously?
P2 CHECK OPERATION OF LOW OIL PRESSURE INDICATOR
• Enter the interface adapter assembly (IAA) module active command
mode INDICATOR LAMP CONTROL III and set the active command
LOW LUBE to ON.
• Does the low oil pressure indicator illuminate?
P3 CHECK LOW OIL PRESSURE 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 12 and ground
(BOB pin 80).
• Does the low oil pressure indicator illuminate?
P4 CHECK LOW OIL PRESSURE INDICATOR BULB
• With key OFF, remove and check the low oil pressure indicator bulb.
• Is the bulb OK?
P5 CHECK CIRCUIT 3043 (W/PK) FOR OPEN
• With key OFF, disconnect instrument cluster C214 and measure the
resistance of the W/PK wire between pin 2 on instrument cluster C214
and BOB pin 12.
• Is the resistance less than 5 ohms?
P6 CHECK CIRCUIT 3043 (W/PK) FOR SHORT TO POWER
• With key ON, measure the voltage between BOB pin 12 and ground
(BOB pin 80).
• Is the voltage greater than 0 volts?
P7 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?
P8 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 12 and ground (BOB pin 80).
• Is the resistance greater than 10,000 ohms?
P9 CHECK CIRCUIT 3043 (W/PK) 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 12 and ground
(BOB pin 80).
• Is the resistance greater than 10,000 ohms?
Instrument Cluster
TEST STEP ACTION TO TAKE
GO to P8.
Yes =
No = GO to P2.
Yes = System OK. CHECK wiring
for intermittent connections.
GO to P3.
No =
REPLACE the IAA module.
REFER to Section 412-04.
No = GO to P4.
GO to P5.
Yes =
No = REPLACE the bulb.
Yes = GO to P6.
No = REPAIR the W/PK wire.
Yes = REPAIR the W/PK wire.
No = GO to P7.
REPLACE the instrument
cluster.
No = REPAIR the LB wire(s) in
question.
Yes = REPLACE the instrument
cluster.
No = GO to P9.
Yes = REPLACE the IAA module.
REFER to Section 412-04.
No = REPAIR the W/PK wire.
2001 Ranger EV, 01/2001
413-01-25