Dodge Neon / Neon SRT-4. Manual — part 600
Symptom:
*CHECKING PCM POWER AND GROUND CIRCUITS
POSSIBLE CAUSES
(A14) PCM FUSED B+ CIRCUIT
(A41) PCM FUSED IGNITION SWITCH OUTPUT CIRCUIT
(Z12) PCM GROUND CIRCUITS
TEST
ACTION
APPLICABILITY
1
NOTE: The battery must be fully charged before continuing.
Turn the ignition off.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Using a 12-volt test light connected to ground, probe the (A14) PCM Fused B+ circuit
in the Pinout Box.
Does the test light illuminate brightly?
All
Yes
→ Go To 2
No
→ Repair the (A14) Fused B+ circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
2
Turn the ignition off.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the (A41) PCM Fused Ignition
Switch Output circuit in the Pinout Box.
Does the test light illuminate brightly?
All
Yes
→ Go To 3
No
→ Repair the (A41) Ignition Switch Output circuit
Perform POWERTRAIN VERIFICATION TEST VER - 1.
3
Turn the ignition off.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Using a 12-volt test light connected to battery voltage, probe the (Z12) PCM ground
circuits in the Pinout Box.
Does the test light illuminate brightly?
All
Yes
→ Test Complete.
No
→ Repair the (Z12) PCM ground circuits.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
305
DRIVEABILITY - NGC
Symptom:
*CHECKING RAD FAN HIGH SPEED OPERATION (TURBO)
POSSIBLE CAUSES
GROUND CIRCUIT OPEN
RADIATOR FAN MOTOR
FUSED B+ CIRCUIT
RADIATOR FAN RELAY OUTPUT CIRCUIT
RAD FAN RELAY #1 OPERATION
RADIATOR FAN RELAY
RELAY #3 GROUND CIRCUIT OPEN (Z1)
TEST
ACTION
APPLICABILITY
1
WARNING: The Checking Low Speed Fans Operation chart must be per-
formed first before continuing.
Turn the ignition on.
With the DRBIII
t, actuate the High Speed Rad Fan Relay.
Is the Rad Fan #1 operating
All
Yes
→ Go To 2
No
→ Go To 3
2
NOTE: The High Speed Relay #2 must still being actuating.
Turn the ignition on.
With the DRBIII
t, actuate the Low Speed Rad Fan Relay #1.
NOTE: Both Fans should be operating at high speed.
Is the Rad Fan #2 operation at high speed?
All
Yes
→ The High Speed Fans are operating normal at this time.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ At the Rad Fan Control Relay #3 connector in the PDC check the
ground circuit (Z1) for an open. If OK, replace the Rad Fan
Control Relay #3.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
3
Turn the ignition off.
Disconnect the Rad Fan #1 harness connector.
Measure the resistance between the Ground circuit in the Radiator Fan harness
connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
306
DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
4
Disconnect the Rad Fan #1 harness connector.
Turn the ignition on.
With the DRBIII
t, actuate the High Speed Rad Fan Relay #2.
Measure the voltage of the Radiator Fan Relay Output circuit in the Radiator Fan
harness connector.
Is the voltage above 11.0 volts?
All
Yes
→ Replace the Radiator Fan Assembly.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
Turn the ignition off.
Remove the High Speed Rad Fan Relay #2 from the PDC.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit in the PDC.
Does the test light illuminate brightly?
All
Yes
→ Go To 6
No
→ Repair the Fused B+ circuit. Inspect fuses and replace as neces-
sary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
6
Turn the ignition off.
Remove the High Speed Rad Fan Relay from the PDC.
Disconnect the Rad Fan #1 harness connector.
Measure the resistance of the High Speed Rad Fan Relay Output circuit between the
PDC and the Radiator Fan harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Radiator Fan Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Repair the Hgih Speed Rad Fan Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
307
DRIVEABILITY - NGC
*CHECKING RAD FAN HIGH SPEED OPERATION (TURBO) —
Continued
Symptom:
*CHECKING RAD FAN LOW SPEED OPERATION (TURBO)
POSSIBLE CAUSES
FUSED B+ CIRCUIT OPEN
LOW SPEED FANS OPERATION
RADIATOR FAN RELAY #3
LOW SPEED RAD FAN OUTPUT SHORTED TO GROUND BETWEEN RELAY #2 AND FAN #2
LOW SPEED RAD FAN OUTPUT SHORTED TO GROUND FAN#2 AND RELAY #3
RAD FAN #1 SHORTED INTERNALLY
RADIATOR FAN RELAY 1 OR 3
LOW SPEED RAD OUTPUT CIRCUIT SHORTED TO GROUND BETWEEN RELAY #3 AND FAN#1
GROUND CIRCUIT OPEN
RAD FAN #1 OPEN
RAD FAN #2 OPEN
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, actuate the Low Speed Rad Relay.
Observe the Radiator Fans.
Choose a conclusion that best match the Radiator Fans operation.
All
Both Fans operation at at low speed
Low Speed Radiator Fans are operation normally at this time.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Fan #2 operating only
Fans not Operating
2
Using the DRBIII
t, actuate the Low Speed Fan Relay #1.
Turn the ignition on.
Remove the Rad Fan Relay Control #3 from the PDC.
Did the Fan #2 stop operating?
All
Yes
→ Replace the Rad Fan Relay Control #3.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 3
308
DRIVEABILITY - NGC
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст