Dodge Neon / Neon SRT-4. Manual — part 518
Symptom:
PUMP CIRCUIT FAILURE
When Monitored and Set Condition:
PUMP CIRCUIT FAILURE
When Monitored:
Ignition on. The CAB commands the pump on at 20 km/h (12 mph) to
check its operation, if the brake switch is not applied. If the brake is applied, the test will
run at 40 km/h (25 mph).
Set Condition:
The DTC is stored when the CAB detects: 1) Improper voltage decay after
the pump was turned off. 2) Pump not energized by the CAB, but voltage is present for 3.5
seconds. 3) Pump is turned on by the CAB, but without sufficient voltage to operate it.
POSSIBLE CAUSES
CAB - PUMP MOTOR RUNNING CONTINUOUSLY
ABS PUMP FUSE
ABS PUMP MOTOR INTERMITTENT DTC
DAMAGED CAB/CAB HARNESS CONNECTOR
ABS PUMP FUSED B(+) CIRCUIT INTERMITTENT SHORT TO GROUND
ABS PUMP FUSED B(+) CIRCUIT SHORT TO GROUND
CAB - INTERNAL FAULT
ABS PUMP MOTOR INOPERATIVE
ABS PUMP MOTOR OPEN
ABS PUMP MOTOR B(+) CIRCUIT OPEN
ABS PUMP MOTOR GROUND CIRCUIT OPEN
CAB - INTERNAL FAULT
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Turn the ignition on.
Monitor the ABS Pump Motor for continuous operation.
NOTE: The CAB must sense ALL wheels at 25 km/h (15 mph) before it will
extinguish the ABS indicators.
Is the ABS Pump Motor running continuously?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 2
24
BRAKES (CAB)
TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
Turn the ignition on.
With the DRBIII
t, read DTCs.
With the DRBIII
t, erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the DRBIII
t, actuate the ABS Pump Motor.
Did the ABS Pump Motor operate?
All
Yes
→ Go To 3
No
→ Go To 4
3
Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Make sure the Pump Motor connecter is secure.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Test Complete.
4
Turn the ignition off.
Remove and inspect the ABS Pump fuse.
Is the ABS Pump fuse open?
All
Yes
→ Go To 5
No
→ Go To 8
5
Turn the ignition off.
Visually inspect the ABS Pump Fused B(+) circuit in the wiring harness.
Look for any sign of an intermittent short to ground.
Is the wiring harness OK?
All
Yes
→ Go To 6
No
→ Repair the ABS Pump Fused B(+) circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the CAB harness connector.
Check connectors - Clean/repair as necessary.
Using a 12-volt test light connected to 12-volts, probe the ABS Pump Fused B(+)
circuit fuse terminal.
Does the test light illuminate?
All
Yes
→ Repair the ABS Pump Fused B(+) circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 7
25
BRAKES (CAB)
PUMP CIRCUIT FAILURE —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Reconnect the CAB harness connector.
Using a 12-volt test light connected to 12-volts, probe the ABS Pump Fused B(+)
circuit fuse terminal.
Does the test light illuminate?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the ABS Pump fuse. If the fuse is open make sure to check
for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
8
Turn the ignition off.
Disconnect the CAB harness connector.
Inspect the CAB and CAB harness connector for damage.
Is there any broken, bent, pushed out, corroded, or spread terminals?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 9
9
Turn the ignition off.
Reinstall the ABS Pump fuse.
Disconnect the ABS Pump Motor connector.
Check connectors - Clean/repair as necessary.
Connect a 10 gauge 40 amp fused jumper wire between the ABS Pump Fused B(+)
terminal in the CAB harness connector to the ABS Pump Motor connector RED wired
terminal.
Connect a 10 gauge jumper wire between the Ground circuit terminal in the CAB
harness connector to the ABS Pump Motor connector BLACK wired terminal.
Did the ABS Pump Motor operate?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 10
10
Turn the ignition off.
Disconnect the ABS Pump Motor connector.
Check connectors - Clean/repair as necessary.
Connect a 10 gauge 40 amp fused jumper wire between the ABS Pump Motor
connector RED wired terminal and an alternate 40 amp capable B(+) source.
Connect a 10 gauge jumper wire between the ABS Pump Motor connector BLACK
wired terminal and ground
Did the ABS Pump Motor operate?
All
Yes
→ Go To 11
No
→ Replace the Hydraulic Control Unit in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
26
BRAKES (CAB)
PUMP CIRCUIT FAILURE —
Continued
TEST
ACTION
APPLICABILITY
11
Turn the ignition off.
Disconnect the ABS Pump Motor connector.
Check connectors - Clean/repair as necessary.
Connect a 10 gauge 40 amp fused jumper wire between the ABS Pump Fused B(+)
terminal in the CAB harness connector to the ABS Pump Motor connector RED wired
terminal.
Connect a 10 gauge jumper wire between the ABS Pump Motor connector BLACK
wired terminal and ground.
Did the ABS Pump Motor operate?
All
Yes
→ Repair the ABS Pump Motor Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Repair the ABS Pump Motor Ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
27
BRAKES (CAB)
PUMP CIRCUIT FAILURE —
Continued
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