Dodge Caliber. Manual - part 906

U1418-IMPLAUSIBLE RIGHT WHEEL DISTANCE SIGNAL RECEIVED

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Ignition on.

•

Set Condition:
The PCM gets an implausible signal over the CAN C circuit from the ABS Module. The circuit is continuously
monitored.

Possible Causes

VEHICLE SPEED SENSOR DTC ACTIVE IN ANTI-LOCK BRAKE MODULE

CAN C BUS CIRCUIT SHORTED

CAN C BUS CIRCUIT OPEN

ANTI-LOCK BRAKE (ABS) MODULE

POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).

Theory of Operation

The ABS Module sends an implausible distance signal over the CAN C Bus circuit to the PCM.

Diagnostic Test

ACTIVE DTC

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The
screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting
any of the network components allows access to the source of the problem.
Ignition on, engine not running.

With a scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

>> Go To 2

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

ABS MODULE IS ACTIVE ON THE CAN C BUS

Using the Network Review Screen on the scan tool, verify that the ABS Module is active on the bus.

Is the ABS Module active on the bus?

Yes

>> Go To 3

>> Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for No

Response diagnostic procedures.

Perform BODY VERIFICATION TEST – VER 1.

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DTCS STORED OR ACTIVE IN THE ABS MODULE

With the scan tool, select View DTCs in the ABS Module.

Are any DTCs active or stored in the ABS Module?

Yes

>> Refer to section 5 - BRAKES - ABS ELECTRICAL DIAGNOSTICS and perform the appropriate diag-

nostic procedure.

Perform ABS VERIFICATION TEST – VER 1

>> Go to 4

ACTIVE DTCS IN THE TIPM

With the scan tool, select ECU View and select the TIPM.

With the scan tool, select View DTCs in the TIPM.

Are any ABS related DTCs active or stored in the TIPM?

Yes

>> Replace the ABS Module in accordance with the Service Information

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Replace and program the Powertrain Control Module per Service Information.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

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ENGINE ELECTRICAL DIAGNOSTICS - GPEC

PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE

For a complete wiring diagram Refer to Section 8W.

Diagnostic Test

NO RESPONSE

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The
screen depicts a high level view of the vehicle network. Fault and problem areas appear in red.

Does the scan tool display a Vehicle Network problem or NO RESPONSE condition?

Yes

>> Refer to the appropriate BUS Communication test in Section 8 ELECTRONIC CONTROL MODULES -

ELECTRICAL DIAGNOSTICS.

>> Go To 2

NO START

Does the vehicle have a NO START condition?

Yes

>> Check the vehicle for any DTC(s), including Vehicle Theft Security related DTC(s), that may cause a

no-start condition.

If no DTC(s) are present that relate to a no-start condition, refer to the Non DTC Diagnostic Procedures
that relate to Fuel and Starting.

>> Go To 3

VEHICLE REPAIR HISTORY AND TSB(s)

Check the vehicle repair history for repairs that may relate to the current condition.

Inspect the vehicle for aftermarket accessories that may have been installed incorrectly.

Check for any TSB(s) related to the condition or DTC(s).

If a TSB applies, follow the procedure outlined in the TSB.

Select the appropriate response for the condition that applies:

Performing a TSB procedure repaired the condition.

Test Complete.

Perform the PCM Verification Test Ver. 1.

A DTC is present, no TSB applies, or the TSB didn’t repair the condition.

Go To 4

No DTC(s) or conditions are present.

Refer to the INTERMITTENT CONDITION Diagnostic Procedure.

VEHICLE INSPECTION

WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A DIRECT LINE WITH THE FAN. DO NOT
PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Based on the diagnostic condition that applies, review the following list and perform any tests that relate to the
condition:

If multiple DTCs are set in the PCM, review the wiring schematics for problems in any shared supply or ground
circuits. Refer to the diagnostic procedure for Checking the PCM Power and Ground Circuits.

Inspect the air intake system and related tubes for damage, restriction, or poor connection.

Inspect the exhaust system and related tubes for damage, restriction, or poor connection.

Remove and inspect the Air Filter for excessive dirt and debris which may cause an air flow restriction.

If the PCM detects and stores a DTC, the PCM also stores the environmental conditions under which the DTC was
set.

Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when
checking for an active DTC.

With the scan tool, Clear the stored DTC(s).

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Attempt to duplicate the environmental conditions under which the DTC was set.

Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the vehicle conditions under which
the DTC conditions will be monitored. Operate the vehicle under those conditions.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the component and the
module.

If the DTC(s) are fuel or air related, check the fuel level and quality.

Were any repairs made that corrected the DTC or condition?

Yes

>> Test complete.

Perform the PCM Verification Test Ver. 1.

>> Refer to the diagnostic test procedure related to the DTC.

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