Dodge Nitro. Manual — part 197

Fig. 55: Anti-Lock Brakes Module Circuit Schematic
Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

When Monitored:

With the ignition on and the ABS Pump Motor deactivated, but not if supply voltage faults are detected.

Or, if the control is switched off.

Set Condition:

If the Anti-Lock Brakes Module detects either a low voltage condition when the ABS Pump Motor is
activated or deactivated or a high voltage condition when the ABS Pump Motor is deactivated.

Diagnostic Test

1) CHECK FOR A DTC C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE

Turn the ignition on.

With the scan tool, record and erase DTCs.

Cycle the ignition switch from off to on.

Road test the vehicle over 40 km/h (25 mph).

With the scan tool, read DTCs.

Does the scan tool display: C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE?

Yes

Go to 2).

No

Possible Causes

WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
ABS PUMP MOTOR FUSE OPEN
(A107) FUSED B(+) CIRCUIT SHORTED TO GROUND, OPEN, OR HIGH RESISTANCE
(Z127) OR (Z107) GROUND CIRCUIT OPEN, OR HIGH RESISTANCE
ANTI-LOCK BRAKES MODULE
PUMP MOTOR (HYDRAULIC CONTROL UNIT)

NOTE:

This DTC must be active for the results of this test to be valid.

NOTE:

Vehicle must be driven above 40 km/h (25 mph) for set conditions to be
meet.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Perform the ABS INTERMITTENT CONDITION diagnostic procedure.

2) INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS

Turn the ignition off.

Visually inspect the Anti-Lock Brakes Module harness connector and wiring harness for damage.

Check all related wiring for pinched, chafed, pierced, and partially broken wires.

Check all related connectors for broken, bent, pushed out, and corroded terminals.

Were any problems found?

Yes

Repair as necessary.

Perform ABS VERIFICATION TEST.

No

Go to 3).

3) CHECK ABS PUMP MOTOR FUSE

Remove and visually inspect the ABS Pump Motor fuse.

Is the fuse open?

Yes

Go to 4).

No

Go to 5).

4) CHECK (A107) FUSED B(+) CIRCUIT FOR A SHORT TO GROUND

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Fig. 56: Measuring Resistance Of (A107) Fused B(+) Circuit Between Ground And Anti-Lock
Brakes Module Harness Connector
Courtesy of CHRYSLER LLC

Disconnect the Anti-Lock Brakes Module harness connector.

Measure the resistance of the (A107) Fused B(+) circuit between ground and the Anti-Lock Brakes
Module harness connector.

Is the resistance below 10k ohms?

Yes

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro