ELECTRICAL SYSTEM AND TESTING
Diagnostic Flow Charts
Page 11-12 1998/1999 PowerDrive Plus Maintenance and Service Supplement
11
Figure 11-10 Flow Chart 1 - Vehicle Does Not Operate
REPLACE
CONTROLLER
NO VOLTAGE
READING
LOW VOLTAGE
READING
REPLACE
CONTROLLER
NO VOLTAGE
CHECK VOLTAGE
OUTPUT FROM
OBC BLUE WIRE
VEHICLE DOES NOT OPERATE
TEST PROCEDURE 2
CHECK BATTERY
PACK VOLTAGE
TEST PROCEDURE 1
CHECK F&R
SWITCH
CONTINUITY
TEST PROCEDURE 16
CHECK VOLTAGE
AT MAIN
SOLENOID
ACTIVATING COIL
TEST PROCEDURE 3
REPLACE
SOLENOID
TEST PROCEDURE 4
CHECK KEY
SWITCH AND
ACCELERATOR
LIMIT SWITCH
CIRCUIT
TEST PROCEDURE 9
REPLACE
MOTOR
NO VOLTAGE
VOLTAGE READING
CORRECT
VOLTAGE READING
CORRECT
VOLTAGE READING
CORRECT
OK
CHECK
MULTI-STEP
POTENTIOMETER
REPAIR OR
REPLACE WIRING,
KEY OR LIMIT
SWITCH
AS REQUIRED
LOW VOLTAGE
SHORT CIRCUIT
CHECK TOW/RUN
SWITCH CIRCUIT
TEST PROCEDURE 6
OK
OK
OK
REPLACE OBC
REPAIR OR
REPLACE
TOW SWITCH
CIRCUIT
AS REQUIRED
CHECK FOR
SHORT CIRCUIT
IN MOTOR
CHECK VOLTAGE
AT A1 AND A2
MOTOR
TERMINAL POSTS
TEST PROCEDURE 5
NO VOLTAGE
READING
RECHARGE
BATTERIES
LOW VOLTAGE
READING
VOLTAGE READINGS
ARE ZERO
VOLTAGE READING
CORRECT, SOLENOID
DOES NOT CLICK
VOLTAGE READING
CORRECT, SOLENOID
CLICKS
REPLACE
CONTROLLER
NO CONTINUITY
REPLACE
F&R SWITCH
VOLTAGE READINGS
ARE CORRECT
CHECK MAIN
SOLENOID FOR
CONTINUITY
TEST PROCEDURE 15
REPLACE
SOLENOID
NO CONTINUITY
REPLACE
MOTOR
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