Ford Electric Ranger 2001 Manual page 280

310-02-4
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1750 ACCELERATION POSITION SENSOR (APS) OUT OF RANGE
• Depress the accelerator pedal.
• Does the AP1V PID vary within the range of 0.25 and 4.85 volts?
A2 CHECK CIRCUITS 3835 (Y/W), 3836 (Y/LB), AND 3837 (GY/Y)
(TO APS1) FOR OPEN(S)
• Connect 104-Pin Breakout Box (BOB) to traction inverter module (TIM)
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
measure the resistance of the Y/LB wire between pin G on APS C2995
and BOB pin B5.
• With key OFF, measure the resistance of the GY/Y wire between pin A
on APS C2995 and BOB pin B3.
• With key OFF, measure the resistance of the Y/W wire between pin F on
APS C2995 and BOB pin B4.
• Are the resistances less than 5 ohms?
A3 CHECK CIRCUITS 3835 (Y/W) AND 3836 (Y/LB) (TO APS1) FOR
SHORT(S) TO GROUND
• With key OFF, measure the resistance between BOB pins B4, B5 and
ground (BOB pin A29).
• Are the resistances greater than 10,000 ohms?
A4 CHECK CIRCUITS 3835 (Y/W) AND 3836 (Y/LB) (TO APS1) FOR
SHORT(S) TO POWER
• With key ON, measure the voltage between BOB pins B4, B5 and
ground (BOB pin A29).
• Are any of the voltages greater than 0 volts?
A5 CHECK APS1 REFERENCE VOLTAGE
• With key OFF, connect TIM to BOB; leave BOB connected to TIM
C4998 and C4999.
• With key ON, measure the voltage between BOB pin B5 and ground
(BOB pin A29).
• Is the voltage between 4.9 and 5.1 volts?
A6 CHECK APS1 SIGNAL
• With key OFF, reconnect APS C2995.
• With key ON, measure the voltage between BOB pins B3 and B4 while
depressing the accelerator pedal from idle to wide open throttle (WOT).
• Does the voltage vary within the range of 0.25 and 4.85 volts?
A7 CHECK ACCELERATION POSITION SENSOR TWO (APS2)
SIGNAL
• With key ON, monitor the TIM PID AP2V.
• Depress the accelerator pedal.
• Does the AP2V PID vary within the range of 4.75 and 0.15 volts?
A8 CHECK CIRCUITS 3010 (T), 3011 (BK/O), AND 3012 (W) (TO
APS2) FOR OPEN(S)
• Connect 104-Pin Breakout Box (BOB) to TIM C4998 and C4999, using
the BCM/TIM BOB Adapter Cable and Overlay; leave the TIM
disconnected.
(Continued)
Acceleration Control
TEST STEP ACTION TO TAKE
No = GO to A2.
GO to A3.
Yes =
No = REPAIR the wire(s) in
question.
GO to A4.
Yes =
No = REPAIR the wire(s) in
question.
Yes = REPAIR the wire(s) in
question.
GO to A5.
No =
Yes = GO to A6.
No = REPLACE the TIM. REFER
to Section 303-14.
Yes = REPLACE the TIM. REFER
to Section 303-14.
No = REPLACE the APS.
Yes = GO to A13.
GO to A8.
No =
GO to A9.
Yes =
2001 Ranger EV, 01/2001
310-02-4