Ford Electric Ranger 2001 Manual page 182

211-02-4
DIAGNOSIS AND TESTING (Continued)
Symptom Chart
Symptom Chart
Condition
DTC C1778 Power Steering
•
Failure
No Power Steering Assist
•
More Than Usual Steering
•
Effort Required to Turn
Steering Wheel (Power
Steering Pump Speed Does
Not Increase While Turning
the Steering Wheel)
Steering Effort Easier Than
•
Normal at High Speeds
Steering Wheel Shudder
•
Pinpoint Tests
Special Tool(s)
104-Pin Breakout Box (BOB) 418-049 (014-00950) or
equivalent
Vacuum Tester 014-R1054 or equivalent
High Voltage Insulated Safety Gloves 100-F036 or
equivalent
Face Shield 100-F035 or equivalent
PINPOINT TEST A: DTC C1778 POWER STEERING FAILURE
A1 CHECK FOR MULTIPLE AUXILIARY LOAD FAILURE
• With key ON, measure the voltage of the auxiliary battery.
• Is the voltage greater than 13 volts?
A2 VERIFY SYMPTOM
(Continued)
Power Steering
Possible Sources
Circuit(s).
•
Interface adapter assembly
•
(IAA) module.
Power steering assembly.
•
High-voltage fuse.
•
High-voltage power
•
distribution box (HVPDB).
Circuit(s).
•
Interface adapter assembly
•
(IAA) module.
Power steering assembly.
•
High-voltage fuse.
•
High-voltage power
•
distribution box (HVPDB).
Power steering fluid level.
•
Tire pressure.
•
Steering alignment.
•
Steering gear.
•
Power steering assembly.
•
Circuit(s).
•
Steering wheel sensor.
•
Steering alignment.
•
Steering gear.
•
Power steering assembly.
•
Circuit(s).
•
Power steering fluid level.
•
Air in system.
•
TEST STEP
Action
GO to Pinpoint Test A.
•
GO to Pinpoint Test A.
•
GO to Pinpoint Test B.
•
GO to Pinpoint Test C.
•
GO to Pinpoint Test D.
•
ACTION TO TAKE
GO to A2.
Yes =
No = REFER to Multiple
Auxiliary Load Failure
Diagnosis in Section
414-03A or Section
414-03B.
2001 Ranger EV, 01/2001
211-02-4