DIAGNOSTIC CODE IDENTIFICATION Code 12 a Will flash three times to indicate that system diagnostics are working. ... Lean Exhaust Indication a Engine running 2 minutes steady throttle above 2000 RPM with oxygen sensor signal less than 200 mv. ... [Courtesy of GM Product Service Training, General Motors Corporation) With the engine at normal operating temperature, plug the air passage to theanbsp;...
|Title||:||Advanced electronic diagnosis of automobiles|