What does the code b0021 on a restraints control module mean?
B0021 Meaning The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory.
What to do if you get a b0021 code?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost to diagnose the B0021 code is 1.0 hour of labor.
How does the b0021 code work on a Chevrolet?
B0021 Chevrolet Description If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in non-volatile memory. During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the passenger seat side air bag.
What does the code b0021 on a SRS mean?
If the Restraints Control Module (RCM) detects a short between the driver side air curtain circuits and the circuits of another SRS component, it sets this Diagnostic Trouble Code (DTC) and the DTC of the corresponding SRS component. B0021 Possible Symptoms. B0021 Meaning.
B0021 Meaning The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory.
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost to diagnose the B0021 code is 1.0 hour of labor.
B0021 Chevrolet Description If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in non-volatile memory. During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the passenger seat side air bag.
What is the Sub-code for the passenger presence system?
Sub-code 3A indicates the sensing and diagnostic module (SDM) has determined the incorrect passenger presence system module is installed. Sub-code 4B indicates the passenger presence system module is not calibrated.