Ford 2001 Ranger, Manual

Page: 371 / 1218

413-01-16 413-01-16 Instrument Cluster
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST E: ECONOMY GAUGE DOES NOT OPERATE PROPERLY OR ALWAYS IND
(POSITIVE)
TEST STEP ACTION TO TAKE
E7 CHECK GROUND TO INSTRUMENT CLUSTER
•
With key OFF, measure the resistance between pin 6 (BK/W wire) on Yes = REPAIR circuit 584 (Y
instrument cluster C215 and ground. wire).
•
Is the resistance less than 5 ohms?
No = REPAIR the BK/W wire.
E8 CHECK IAA MODULE
•
With key OFF, disconnect IAA module C1945. Yes = GO to E9.
•
With key ON, check the economy gauge. No = REPLACE the IAA module.
•
Does the economy gauge in (positive)?
E9 CHECK CIRCUIT 3408 (DB/O) FOR SHORT TO POWER
•
Connect 104-Pin Breakout Box (BOB) to the IAA module C1945; leave Yes = REPAIR the DB/O wire.
IAA module disconnected.
•
With key ON, measure the voltage between BOB pin 22 and ground No = REPLACE the instrument
(BOB pin 80). cluster.
•
Is the voltage greater than 0 volts?
PINPOINT TEST F: DISTANCE TO EMPTY (DTE) GAUGE DOES NOT OPERATE OR INDICATES
INCORRECT DISTANCE TO EMPTY
TEST STEP ACTION TO TAKE
F1 IDENTIFY SYMPTOM
•
Enter the interface adapter assembly (IAA) module active command Yes = GO to F2.
mode DISTANCE TO EMPTY GAUGE and set the active command
DTE G to 30%.
•
Does the distance to empty (DTE) gauge indicate greater than 0
No = GO to F3.
miles to empty?
F2 CHECK DTE GAUGE FOR CORRECT DTE
•
Set the active command DTE G to the following percentages and verify Yes = System OK. CHECK wiring
the DTE gauge operation: for intermittent connections.
Percentage/DTE
No = REPLACE the instrument
cluster.
— 12% = 0-3.2 km (0-2 miles)
— 20% = 13-16 km (8-10 miles)
— 28% = 27-34 km/h (17-21 miles)
— 40% = 40-47 km (25-29 miles)
— 48% = 64-71 km (40-44 miles)
— 56% = 81-87 km (50-54 miles)
— 64% = 97-103 km (60-64 miles)
•
Is the DTE gauge OK?
F3 CHECK INTERFACE ADAPTER ASSEMBLY (IAA) MODULE
•
Connect 104-Pin Breakout Box (BOB) to the IAA module and IAA Yes = GO to F4.
module C1945.
•
Enter the IAA module active command mode DISTANCE TO EMPTY No = REPLACE the IAA module.
GAUGE and set the active command DTE G to 30%. REFER to Section 412-04.
•
Set the multimeter to the frequency setting and measure the frequency
between BOB pin 98 and ground (BOB pin 80).
•
Is the frequency greater than 70 Hz?
F4 CHECK CIRCUIT 3047 (Y/W) FOR OPEN
•
With key OFF, disconnect instrument cluster C214. Yes = GO to F5.
(Continued)
2001 Ranger EV, 01/2001