Fig. 5 Voltage Drop Test
PERFORM VOLTAGE DROP
TEST
CHECK
WIRING
CONNEC-
TIONS
AT
GENERATOR,
STARTER,
MOTOR,
BAT-
TERY.
YES
VOLTAGE
DROP
ABOVE
0.6
VOLTS?
NO
WITH
ENGINE
RUNNING,
MEASURE VOLTAGE AT CIR-
CUIT A142 ON THE GENERA-
TOR.
CONNEC-
TIONS GOOD?
NO
REPAIR WIRE.
WITH ENGINE OFF, CHECK POWER-
TRAIN CONTROL MODULE PIN 6
FOR CORROSION OR DAMAGE
YES
VOLTAGE
LESS
THAN
10
VOLTS?
NO
REPEAT OUTPUT VOLT-
AGE TEST
CHECK WIRING FOR
BROKEN WIRE
REPEAT
VOLTAGE
DROP TEST
CHECK WIRE HARNESS RESISTANCE FROM PIN
6 PCM CONNECTOR TO PIN 1 ON GENERATOR
CONNECTOR
WITH ENGINE OFF, CONNECT
JUMPER WIRE FROM BATTERY
POSITIVE POST TO A142 CIR-
CUIT TERMINAL ON THE GEN-
ERATOR.
WIRE
BROKEN?
NO
CHECK
FOR
BLOWN
FUSE
LINK
NO
IF
LESS
THAN
5
OHMS
IF
GREATER
THAN
5
OHMS
MEASURE VOLTAGE AT K-20 TERMI-
NAL ON THE GENERATOR.
YES
YES
REPAIR WIRE
DISCONNECT
FIELD
CONNECTOR
REPLACE PCM
REPLACE
GENERATOR
YES
VOLTAGE
AT
K-20
LESS
THAN
10
VOLTS?
REPEAT
OUTPUT
VOLTAGE TEST
CHECK SHORT CIRCUIT
IN WIRE
REPAIR FUSE LINK
AND WIRE SHORT.
REFER TO GROUP
8W
WIRING
DIA-
GRAMS.
YES
SHORT
CIRCUIT
IN
FEED
WIRE?
NO
REPAIR
A142
CIRCUIT.
REFER TO GROUP 8W, WIR-
ING DIAGRAMS
CHECK
POWERTRAIN
CONTROL
MODULE
PIN
41
FOR
CORROSION
OR
DAMAGE.
NO
REPEAT OUTPUT TEST
REPEAT OUTPUT VOLT-
AGE TEST
REPLACE
GENERATOR
REPAIR FUSE LINK.
REPEAT OUTPUT VOLT-
AGE TEST
REPAIR PIN
YES
CORROSION
OR
DAMAGE
ON
PIN
4?
NO
REPEAT OUTPUT VOLT-
AGE TEST
CHECK
WIRE
K-20
REPAIR WIRE
YES
WIRE
OPEN
CIRCUIT?
NO
REFER TO CHARGING DIAG-
NOSTIC MANUAL
PL
CHARGING SYSTEM
8C - 9
DIAGNOSIS AND TESTING (Continued)
Summary of Contents for Neon PL 1997
Page 4: ...Charging System Schematic Typical 8C 4 CHARGING SYSTEM PL DIAGNOSIS AND TESTING Continued ...
Page 14: ......
Page 15: ...CHARGING SYSTEM CONTENTS page DIAGNOSIS AND TESTING CHARGING SYSTEM 2 PL CHARGING SYSTEM 8C 1 ...
Page 16: ...DIAGNOSIS AND TESTING CHARGING SYSTEM INSPECTION Charging System Test 8C 2 CHARGING SYSTEM PL ...