Ford 2001 Ranger, Manual

Page: 281 / 1218

310-02-5 310-02-5 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, disconnect acceleration position sensor (APS) C2995 and No = REPAIR the wire(s) in
measure the resistance of the T wire between pin D on APS C2995 and question.
BOB pin B11.
•
With key OFF, measure the resistance of the BK/O wire between pin B
on APS C2995 and BOB pin B9.
•
With key OFF, measure the resistance of the W wire between pin C on
APS C2995 and BOB pin B10.
•
Are the resistances less than 5 ohms?
A9 CHECK CIRCUITS 3010 (T) AND 3012 (W) (TO APS2) FOR
SHORT(S) TO GROUND
•
With key OFF, measure the resistance between BOB pins B4, B5 and Yes = GO to A10.
ground (BOB pin A29).
•
Are the resistances greater than 10,000 ohms?
No = REPAIR the wire(s) in
question.
A10 CHECK CIRCUITS 3010 (T) AND 3012 (W) (TO APS2) FOR
SHORT(S) TO POWER
•
With key ON, measure the voltage between BOB pins B10, B11 and Yes = REPAIR the wire(s) in
ground (BOB pin A29). question.
•
Are any of the voltages greater than 0 volts?
No = GO to A11.
A11 CHECK APS2 REFERENCE VOLTAGE
•
With key OFF, connect TIM to BOB; leave BOB connected to TIM Yes = GO to A12.
C4998 and C4999.
•
With key ON, measure the voltage between BOB pin B11 and ground No = REPLACE the TIM. REFER
(BOB pin A29). to Section 303-14.
•
Is the voltage between 4.9 and 5.1 volts?
A12 CHECK APS2 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 B9 and B10 while No = REPLACE the APS.
depressing the accelerator pedal from idle to wide open throttle (WOT).
•
Does the voltage vary within the range of 4.00 and 0.15 volts?
A13 CHECK ACCELERATION POSITION SENSOR THREE (APS3)
SIGNAL
•
With key ON, monitor the traction inverter module (TIM) PID AP3V. Yes = System OK. CHECK wiring
for intermittent connections.
•
Depress the accelerator pedal. No = GO to A14.
•
Does the AP3V PID vary within the range of 4.00 and 1.56 volts?
A14 CHECK CIRCUITS 3013 (GY/BK), 3014 (BK/W), AND 3015 (W/R)
(TO APS3) FOR OPEN(S)
•
Connect 104-Pin Breakout Box (BOB) to traction inverter module (TIM) Yes = GO to A15.
C4998 and C4999, using the BCM/TIM BOB Adapter Cable and
Overlay; leave the TIM disconnected.
•
With key OFF, disconnect acceleration position sensor (APS) C2995 and No = REPAIR the wire(s) in
measure the resistance of the GY/BK wire between pin E on APS C2995 question.
and BOB pin B17.
•
With key OFF, measure the resistance of the BK/W wire between pin J
on APS C2995 and BOB pin B15.
•
With key OFF, measure the resistance of the W/R wire between pin K
on APS C2995 and BOB pin B16.
•
Are the resistances less than 5 ohms?
A15 CHECK CIRCUITS 3013 (GY/BK) AND 3015 (W/R) (TO APS3)
FOR SHORT(S) TO GROUND
(Continued)
2001 Ranger EV, 01/2001