Fault Code 1212

Fault code 1212

Belt tensioner ignition circuit, rear passenger's side

Diagnostic conditions
- Ignition on
- Internal function test on airbag triggering unit

Possible cause of fault
- Above upper limit (based on resistance value of wiring from airbag triggering unit to belt tensioner or of belt tensioner itself)
- Below lower limit (based on resistance value of wiring from airbag triggering unit to belt tensioner or of belt tensioner itself)
- Short circuit to B+ (based on wiring from pins 31 and 32 of airbag triggering unit and of belt tensioner at rear passenger's side)
- Short circuit to ground (based on wiring from pins 31 and 32 of airbag triggering unit and of belt tensioner at rear passenger's side)
- Open circuit (based on wiring from airbag triggering unit to belt tensioner or of belt tensioner itself)
- Rear passenger-side belt tensioner faulty
- Airbag triggering unit airbag faulty

Affected pins
- Airbag triggering unit: Pins 31 and 32
- Plug connection for belt tensioner, rear passenger's side: Pins 1 and 2

Diagnosis/troubleshooting

WARNING:
Danger of injury if vehicle is driven with special tools in place (commercially available tools included).
- Never drive with special tools or commercially available tools attached instead of the airbag units.

NOTE: Never disconnect plugs that are connected directly to airbag modules and belt tensioners because these have been connected at a defined contact pressure in order to prevent a malfunction due to the plug becoming loose during the life of the vehicle. The plug connections (mostly 3-pin) provided for this purpose must be disconnected using an integrated short- circuit bridge.

169 Additional airbag tester, Porsche set