Dodge Caliber. Manual — part 964
P0501–VEHICLE SPEED SENSOR #1 PERFORMANCE
For a complete wiring diagram Refer to Section 8W
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
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•
When Monitored:
Continuously while the system is active.
•
Set Condition:
There is an error in the vehicle speed message received over the CAN Bus from the Anti-lock Brake Module.
Possible Causes
INTERMITTENT DTC
CAN BUS OPEN OR SHORTED CONDITION
ANTI-LOCK BRAKE MODULE
ENGINE CONTROL MODULE (ECM)
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
ACTIVE DTC
NOTE: Diagnose all CAN B and C communication DTCs before continuing.
Test drive the vehicle
With a scan tool, view DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS
AND TESTING)
Perform the ECM Verification Test Ver. 1.
2.
DTCS PRESENT IN THE ANTI-LOCK BRAKE MODULE
With a scan tool check for DTCs in the Anti-lock Brake Module.
Are there any DTCs active in the Anti-lock Brake Module at this time?
Yes
>> Repair Anti-Lock Brake Module DTC’s.
No
>> Replace and program the Engine Control Module (ECM) in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
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P0504-BRAKE SWITCH SIGNAL CIRCUITS PLAUSIBILITY WITH REDUNDANT
CONTACT
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
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For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on.
•
Set Condition:
The Brake Switch Signal 1 and Brake Switch Signal 2 inputs to the ECM do not agree for 2 minutes.
Possible Causes
INTERMITTENT CONDITION
BRAKE SWITCH SIGNAL 2 - SWITCH 2 CKT OPEN
(A924) FUSED B+ CIRCUIT OPEN
(B215) BRAKE SWITCH SIGNAL 2 CIRCUIT SHORTED TO GROUND
BRAKE SWITCH SIGNAL 1 - SWITCH 1 CKT OPEN
(B215) BRAKE SWITCH SIGNAL 2 CIRCUIT OPEN
(Z967) STOP LAMP SWITCH GROUND CIRCUIT OPEN
(B15) BRAKE SWITCH SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE
(B15) BRAKE SWITCH SIGNAL 1 CIRCUIT OPEN
ENGINE CONTROL MODULE - BRAKE SWITCH SIGNAL 2
ENGINE CONTROL MODULE - INTERNAL
ENGINE CONTROL MODULE - BRAKE SWITCH SIGNAL 1
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
CHECK THE BRAKE SWITCH SIGNAL 1 STATUS
Turn the ignition on.
While observing the BRAKE SWITCH SIGNAL 1 status on the scan tool display, press and release the brake pedal
several times.
Does the scan tool display BRAKE SWITCH SIGNAL1: PRESSED and RELEASED for the appropriate
pedal position?
Yes
>> Go To 2
No
>> Go To 11
2.
CHECK THE BRAKE SWITCH SIGNAL 2 STATUS
While observing the BRAKE SWITCH SIGNAL 2 status on the scan tool display, press and release the brake pedal
several times.
Does the scan tool display BRAKE SWITCH SIGNAL 2: PRESSED and RELEASED for the appropriate
pedal position
Yes
>> Go To 3
No
>> Go To 4
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
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