Intermittent power on problem, monitor now completely dead
This monitor had an intermittent power on problem. I took it apart to see if there were obvious issues such as blown fuse, burnt or blown device, bad solder connections on power connectors, etc. Found nothing obvious but before reassembling I had plugged it in to check output voltage from the power supply; Got 12V and 5V output from output connector, however, the led on control panel lit up and viola, the monitor worked. It continued to work for about 3 weeks until I had to replace the surge protector it was plugged into. Once it was plugged in, it wouldn't turn on. If I unplug it then plug it in to the live outlet, the status led (green on, amber idle) flashes very faintly but it does nothing else. I'm pretty sure the PS is good. If it is, then what else could be causing it to not turn on.
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94+ AIR BAG DIAGNOSTIC TROUBLE CODES/CLEARING
Code Component/Fault Description
No Air Bag Indicator - Inoperative Indicator Circuit
Continuous Air Bag Indicator - Diagnostic Trouble Code Timed Out, Diagnostic Monitor Disconnected or Inoperative, or No Ignition Voltage to Diagnostic Monitor.
12 Lost Battery Feed
13 Air Bag Circuit Shorted to Ground
14 Primary Crash Sensor Circuit Shorted to Ground
21 Diagnostic Monitor Not Mounted to Vehicle Properly
22 Safing Sensor Output Circuit Shorted to Battery Voltage
23 Memory Clear Circuit Improperly Grounded
24 System Disarm Failure or Internal Diagnostic Monitor Fault
32 Driver Side Air Bag Circuit High Resistance or Open
33 Passenger Side Air Bag Circuit High Resistance or Open
34 Driver Side Air Bag Circuit Low Resistance or Shorted
35 Passenger Side Air Bag Circuit Low Resistance or Shorted
41 RH Radiator Primary Crash Sensor Feed/Return Circuit Open
42 LH Radiator Primary Crash Sensor Feed/Return Circuit Open
44 RH Radiator Primary Crash Sensor Not Mounted to Vehicle Properly
45 LH Radiator Primary Crash Sensor Not Mounted to Vehicle Properly
52 Intermittent or Repaired Lost Battery Feed
53 Intermittent or Repaired Air Bag Circuit Shorted to Ground
54 Intermittent or Repaired Primary Crash Sensor Circuit Shorted to Ground
61 Intermittent or Repaired Diagnostic Monitor Not Mounted to Vehicle Properly
62 Intermittent or Repaired Safing Sensor Output Circuit Shorted to Battery Voltage
63 Intermittent or Repaired Memory Clear Circuit Improperly Grounded
64 Intermittent or Repaired System Disarm Failure or Internal Diagnostic Monitor Fault
72 Intermittent or Repaired Driver Side Air Bag Circuit High Resistance or Open
73 Intermittent or Repaired Passenger Side Air Bag Circuit High Resistance or Open
74 Intermittent or Repaired Driver Side Air Bag Circuit Low Resistance or Shorted
75 Intermittent or Repaired Passenger Side Air Bag Circuit Low Resistance or Shorted
81 Intermittent or Repaired RH Radiator Primary Crash Sensor Feed/Return Circuit Open
82 Intermittent or Repaired LH Radiator Primary Crash Sensor Feed/Return Circuit Open
84 Intermittent or Repaired RH Radiator Primary Crash Sensor Not Mounted to Vehicle
85 Intermittent or Repaired LH Radiator Primary Crash Sensor Not Mounted to Vehicle
Rapid Continuous Flashing of Air Bag Indicator (No Diagnostic Trouble Code) Both Primary Crash Sensors Disconnected Assembly Plant Mode
TROUBLE CODE CLEARING
1. Follow the diagnostic procedures to service the fault condition flashing on the air bag indicator prior to code clearing.
2. Cycle the ignition switch to OFF and then to RUN.
3. Observe air bag indicator prove-out (six ? two seconds) followed by diagnostic trouble code (52-85) flashing completely one time.
4. Locate the Diagnostic "Trouble Code Clear" Connector (grey connector). located underneath the glove compartment, left side (06010) containing Circuits 631 (T/R) and 57 (BK).
5. Use a jumper wire to short Circuit 631 (T/R) to Circuit 57 (BK) or to another good ground. This short must be made after the diagnostic trouble code flashes completely one time, but before the warning light stays on continuously.
6. Hold short until air bag diagnostic monitor tone sounds (approximately five seconds).
7. Release short on Circuit 631 (T/R) to Circuit 57 (BK). This short must be released within 25 seconds after the diagnostic monitor tone sounds.
Diagnostic trouble code is now cleared from memory. Next highest priority diagnostic trouble code stored (if one exists) will begin flashing.
The codes and clearing proceedure above are to be used as a guide, NO claims are implied as to the correctness or accuracy of either.
The main fuse may be intermittent, causing complete power failure, the other possibility is a defective door switch not operating properly, or loose plug in the power feed, I suggest a technician to take closer look at the system because this could prove tricky to find the culprit.