DTC | Description | Action |
|---|---|---|
U0420:86 | Invalid Data Received From PSCM: Signal Invalid | GO to Pinpoint Test Q |
U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | GO to Pinpoint Test D |
U0452:41 | Invalid Data Received From Restraints Control Module: General Checksum Failure | The ABS module uses other module messages and sensor input to calculate the yaw rate, lateral acceleration and longitudinal acceleration to verify the RCM messages. If the yaw rate, lateral acceleration and longitudinal acceleration data received from the RCM do not match the calculated values more than 2 times, this DTC is set. If ABS module Diagnostic Trouble Codes (DTCs) C0061:xx, C0062:xx, C0063:xx or C0064:xx are present, DIAGNOSE them before diagnosing U0452:41. Using a diagnostic scan tool, RETRIEVE and DIAGNOSE all RCM Diagnostic Trouble Codes (DTCs). REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). If there are no Diagnostic Trouble Codes (DTCs) in the RCM, the condition may be caused by an intermittent concern. SET the ignition to OFF. WAIT one minutes, then DISCONNECT and INSPECT all RCM electrical connectors and related in-line connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary. |
U0452:86 | Invalid Data Received From Restraints Control Module: Signal Invalid | Along with the yaw rate, lateral acceleration and longitudinal acceleration data the RCM also sends a rolling counter message the ABS module uses to validate the RCM messages. If the rolling counter indicates an invalid signal more than 4 times, this DTC is set. If ABS module Diagnostic Trouble Codes (DTCs) C0061:xx, C0062:xx, C0063:xx or C0064:xx are present, DIAGNOSE them before diagnosing U0452:86. Using a diagnostic scan tool, RETRIEVE and DIAGNOSE all RCM Diagnostic Trouble Codes (DTCs). REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). If there are no Diagnostic Trouble Codes (DTCs) in the RCM, the condition may be caused by an intermittent concern. SET the ignition to OFF. WAIT one minutes, then DISCONNECT and INSPECT all RCM electrical connectors and related in-line connectors for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR as necessary. |
U2007:46 | Valve(s): Calibration / Parameter Memory Failure | This DTC sets due to an internal failure of the ABS module or due to a calibration failure between the HCU and the ABS module. Using a diagnostic scan tool, CARRY OUT the Inlet Valve Calibration routine and then the Master Cylinder Isolation Calibration routine. CLEAR the DTC and REPEAT the self-test. If the DTC returns, INSTALL a new ABS module. REFER to: Anti-Lock Brake System (ABS) Module (206-09 Anti-Lock Brake System (ABS) and Stability Control, Removal and Installation). |
U2007:62 Valve(s): Signal Compare This DTC sets due to an internal failure of the ABS module or due
Failure to a calibration failure between the HCU and the ABS module.
CLEAR the DTC and REPEAT the self-test. If the DTC returns,
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