Ford 2001 Ranger, Manual

Page: 377 / 1218

413-01-22 413-01-22 Instrument Cluster
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST L: ECONOMY MODE INDICATOR DOES NOT OPERATE OR STAYS ON CONTINUOUSLY
TEST STEP ACTION TO TAKE
•
With key OFF, remove and check the economy mode indicator bulb. Yes = GO to L5.
•
Is the bulb OK?
No = REPLACE the bulb.
L5 CHECK CIRCUIT 3044 (LB) FOR OPEN
•
With key OFF, disconnect instrument cluster C214 and measure the Yes = GO to L6.
resistance of the LB wire between pin 5 on instrument cluster C214 and
BOB pin 17.
•
Is the resistance less than 5 ohms?
No = REPAIR the LB wire.
L6 CHECK CIRCUIT 3044 (LB) FOR SHORT TO POWER
•
With key ON, measure the voltage between BOB pin 17 and ground Yes = REPAIR the LB wire.
(BOB pin 80).
•
Is the voltage greater than 0 volts?
No = GO to L7.
L7 CHECK POWER TO INSTRUMENT CLUSTER
•
With key OFF, disconnect instrument cluster C215. Yes = REPLACE the instrument
cluster.
•
With key ON, set the main light switch to the OFF position and measure No = GO to L8.
the voltage between pin 5 (O/BK wire) on instrument cluster C215 and
ground.
•
Is the voltage greater than 10 volts?
L8 CHECK POWER TO MAIN LIGHT SWITCH
•
With key OFF, disconnect main light switch C205. Yes = REPLACE the main light
switch.
•
With key ON, measure the voltage between pin 4 (Y wire) on main light No = REPAIR the Y wire.
switch C205 and ground.
•
Is the voltage greater than 10 volts?
L9 CHECK INSTRUMENT CLUSTER
•
Connect 104-Pin Breakout Box (BOB) to the IAA module and IAA Yes = REPLACE the instrument
module C1945. cluster.
•
With key OFF, disconnect instrument cluster C214 and measure the No = GO to L10.
resistance between BOB pin 17 and ground (BOB pin 80).
•
Is the resistance greater than 10,000 ohms?
L10 CHECK CIRCUIT 3044 (LB) 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 17 and ground No = REPAIR the LB wire.
(BOB pin 80).
•
Is the resistance greater than 10,000 ohms?
PINPOINT TEST M: AUXILIARY BATTERY INDICATOR DOES NOT OPERATE OR STAYS ON
CONTINUOUSLY
TEST STEP ACTION TO TAKE
M1 IDENTIFY SYMPTOM
NOTE: If the auxiliary battery indicator illuminates continuously, retrieve
Yes = GO to M8.
diagnostic trouble codes (DTCs) before carrying out the following test
steps. If DTCs exist, refer to the appropriate DTC Index in Section 100-07.
•
With key ON, identify the symptom.
•
Does the auxiliary battery indicator stay on continuously?
No = GO to M2.
M2 CHECK OPERATION OF AUXILIARY BATTERY 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.
BATTERY to ON.
(Continued)
2001 Ranger EV, 01/2001