Ford 2001 Ranger, Manual

Page: 374 / 1218

413-01-19 413-01-19 Instrument Cluster
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST H: MALFUNCTION INDICATOR LAMP (MIL) DOES NOT OPERATE OR STAYS ON
CONTINUOUSLY
TEST STEP ACTION TO TAKE
H4 CHECK MIL BULB
•
With key OFF, remove and check the MIL bulb. Yes = GO to H5.
•
Is the bulb OK?
No = REPLACE the bulb.
H5 CHECK CIRCUIT 3045 (T) FOR OPEN
•
With key OFF, disconnect instrument cluster C215 and measure the Yes = GO to H6.
resistance of the T wire between pin 8 on instrument cluster C215 and
BOB pin 31.
•
Is the resistance less than 5 ohms?
No = REPAIR the T wire.
H6 CHECK CIRCUIT 3045 (T) FOR SHORT TO POWER
•
With key ON, measure the voltage between BOB pin 31 and ground Yes = REPAIR the T wire.
(BOB pin 80).
•
Is the voltage greater than 0 volts?
No = GO to H7.
H7 CHECK POWER TO INSTRUMENT CLUSTER
•
With key OFF, measure the voltage between pin 10 (LB wire) on Yes = REPLACE the instrument
instrument cluster C215 and ground. cluster.
•
Is the voltage greater than 10 volts?
No = REPAIR circuit 742 (LB
wire).
H8 CHECK INSTRUMENT CLUSTER
NOTE: Carry out the following test steps only if the MIL illuminates
Yes = REPLACE the instrument
continuously with the ignition key in the OFF position and the vehicle not
cluster.
connected to a power control station (PCS).
•
Connect 104-Pin Breakout Box (BOB) to the IAA module and IAA
module C1945.
•
With key OFF, disconnect instrument cluster C215 and measure the No = GO to H9.
resistance between BOB pin 31 and ground (BOB pin 80).
•
Is the resistance greater than 10,000 ohms?
H9 CHECK CIRCUIT 3045 (T) FOR SHORT TO GROUND
•
With key OFF, disconnect the IAA module from the BOB; leave BOB Yes = REPLACE the IAA module.
connected to IAA module C1945. REFER to Section 412-04.
•
With key OFF, measure the resistance between BOB pin 31 and ground No = REPAIR the T wire.
(BOB pin 80).
•
Is the resistance greater than 10,000 ohms?
PINPOINT TEST J: POWER RESET INDICATOR DOES NOT OPERATE OR STAYS ON CONTINUOUSLY
TEST STEP ACTION TO TAKE
J1 IDENTIFY SYMPTOM
NOTE: If the power reset indicator illuminates and the vehicle will not
Yes = GO to J8.
start, refer to Emergency Power Off (EPO)/Interlock System in Section
414-03 A or Section 414-03B .
•
With key ON, identify the symptom.
•
Does the power reset indicator stay on continuously?
No = GO to J2.
J2 CHECK OPERATION OF POWER RESET INDICATOR
•
Enter the interface adapter assembly (IAA) module active command Yes = System OK. CHECK wiring
mode INDICATOR LAMP CONTROL III and set the active command for intermittent connections.
ENG RESET to ON.
•
Does the power reset indicator illuminate?
No = GO to J3.
J3 CHECK POWER RESET INDICATOR CONTROL CIRCUIT
•
Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes = REPLACE the IAA module.
module disconnected. REFER to Section 412-04.
(Continued)
2001 Ranger EV, 01/2001