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Home >> Volvo >> 2003 >> C70 2.3 53, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Electronic Climate Control (ECC), Manual Climate Control (MCC), Heater Module (HEA) - Diagnostic Trouble Code (DTC) Diagnostics - 2 Of 2 (Coupe)) >> HEA-811: Flame Sensor. Signal Too Low (1999-2002) >> Signal Too Low >> Checking Component And Cables

Checking Component And Cables

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Check cable between control module #8 and flame sensor signal cable for a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

HINT: Because it is difficult to separate the flame sensor ground lead from the signal cable measure the cables one at a time to see if the re is a permitted value from one of them. 

If no fault in the cable is found replace the flame sensor.

Remedy as necessary.

Other information: 

Fig 1: Identifying Data Link Connector
GLL102417Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Flame Sensor Circuit
GLL102384Courtesy of VOLVO CARS OF NORTH AMERICA.