Ford 2001 Ranger, Manual

Page: 282 / 1218

310-02-6 310-02-6 Acceleration Control
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1750 ACCELERATION POSITION SENSOR (APS) OUT OF RANGE
TEST STEP ACTION TO TAKE
•
With key OFF, measure the resistance between BOB pins B16, B17 and Yes = GO to A16.
ground (BOB pin A29).
•
Are the resistances greater than 10,000 ohms?
No = REPAIR the wire(s) in
question.
A16 CHECK CIRCUITS 3013 (GY/BK) AND 3015 (W/R) (TO APS3)
FOR SHORT(S) TO POWER
•
With key ON, measure the voltage between BOB pins B16, B17 and Yes = REPAIR the wire(s) in
ground (BOB pin A29). question.
•
Are any of the voltages greater than 0 volts?
No = GO to A17.
A17 CHECK APS3 REFERENCE VOLTAGE
•
With key OFF, connect TIM to BOB; leave BOB connected to TIM Yes = GO to A18.
C4998 and C4999.
•
With key ON, measure the voltage between BOB pin B17 and ground No = REPLACE the TIM. REFER
(BOB pin A29). to Section 303-14.
•
Is the voltage between 4.9 and 5.1 volts?
A18 CHECK APS3 SIGNAL
•
With key OFF, reconnect APS C2995. Yes = REPLACE the TIM. REFER
to Section 303-14.
•
With key ON, measure the voltage between BOB pins B15 and B16 No = REPLACE the APS.
while depressing the accelerator pedal from idle to wide open throttle
(WOT).
•
Does the voltage vary within the range of 4.00 and 1.56 volts?
PINPOINT TEST B: DTC C1855 ACCELERATION POSITION SENSOR (APS) CONFLICT
TEST STEP ACTION TO TAKE
B1 CHECK FOR OTHER DIAGNOSTIC TROUBLE CODES (DTCs)
•
Does DTC C1750 Acceleration Position Sensor Out of Range occur Yes = GO to
Pinpoint Test A.
along with DTC C1855?
No = GO to B2.
B2 CHECK CIRCUITS 3835 (Y/W), 3012 (W), AND 3015 (W/R) FOR
SHORT(S)
•
Connect 104-Pin Breakout Box (BOB) to traction inverter module (TIM) Yes = REPAIR the wire(s) in
C4998 and C4999, using the BCM/TIM BOB Adapter Cable and question.
Overlay; leave the TIM disconnected.
•
With key OFF, disconnect acceleration position sensor (APS) C2995 and No = REPLACE the APS.
measure the resistance between BOB pins B4 and B10, BOB pins B4
and B16, and BOB pins B10 and B16.
•
Are any of the resistances less than 5 ohms?
REMOVAL AND INSTALLATION
Acceleration Position Sensor
Removal
1. NOTE: The acceleration position sensor (APS)
is mounted on the lower driver side bulkhead
and is connected to the throttle pedal.
Disconnect the electrical connector.
2001 Ranger EV, 01/2001