Unexplained Chime
#1
Unexplained Chime
I've encountered a "chime" that is coming from under the dash near the e-brake pedal. The chime only occurs after the truck has been started and running for approx 30 seconds and then stops after approx 60 seconds. The chime sounds like when the door is open with the keys in the ignition, only it is barely audible. I searched for about 30 minutes before I finally found where it was coming from. The PCM is located near the brake pedal, does the PCM make any warning noises? My SuperChips tuner shows no codes,,,,, I'm baffled. Any ideas??????
#4
#5
#7
forgot about that one but if the Air bag light in the cluster is out it does have a backup chime warning
Normal Operation
The air bag indicator is designed to illuminate for 6 (+/-2) seconds when the ignition switch is turned to the RUN position. This initial 6 seconds of illumination is considered normal operation and is called prove out of the air bag indicator. The air bag indicator is then used to warn the driver that there is a fault in the air bag supplemental restraint system (SRS).
The restraints control module (RCM) monitors the air bag indicator for short to battery conditions. If the RCM detects a short to battery condition on the air bag indicator circuit, it will store a diagnostic trouble code (DTC) B1870 in memory.
If the RCM detects an air bag indicator failure in addition to another SRS failure, the RCM will send a signal to the generic electronic module (GEM) to produce five sets of five tone bursts
Normal Operation
The air bag indicator is designed to illuminate for 6 (+/-2) seconds when the ignition switch is turned to the RUN position. This initial 6 seconds of illumination is considered normal operation and is called prove out of the air bag indicator. The air bag indicator is then used to warn the driver that there is a fault in the air bag supplemental restraint system (SRS).
The restraints control module (RCM) monitors the air bag indicator for short to battery conditions. If the RCM detects a short to battery condition on the air bag indicator circuit, it will store a diagnostic trouble code (DTC) B1870 in memory.
If the RCM detects an air bag indicator failure in addition to another SRS failure, the RCM will send a signal to the generic electronic module (GEM) to produce five sets of five tone bursts
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