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Home >> Volvo >> 2003 >> C70 2.3 53, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Electronic Climate Control (ECC), Manual Climate Control (MCC), Heater Module (HEA) - Diagnostic Trouble Code (DTC) Diagnostics - 1 Of 2 (Coupe)) >> ECC-135: Engine Coolant Temperature (ECT) Signal (1999-2002) >> Signal Missing >> Checking Cables

Checking 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 ECC control module #B2 and engine control module (ECM) for an open-circuit according to Open-Circuit, Permanent Faults and a short-circuit to supply voltage according to Short-Circuit To Supply Voltage. Permanent Faults and for a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Also check cable between ECC control module #B2 and combined instrument panel combined instrument panel #A26 for a short-circuit to ground according to Short-Circuit To Supply Voltage. Permanent Faults and a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Remedy as necessary.

Other information: 

Fig 1: Identifying Connector A Terminals
GLL125120Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Connector B
GLL127568Courtesy of VOLVO CARS OF NORTH AMERICA.


Check cable between ECC control module #B2 and engine control module (ECM) for an open-circuit according to Open-Circuit, Permanent Faults and a short-circuit to supply voltage according to Short-Circuit To Supply Voltage. Permanent Faults and for a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Also check cable between ECC control module #B2 and combined instrument panel combined instrument panel #A26 for a short-circuit to ground according to Short-Circuit To Supply Voltage. Permanent Faults and a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Remedy as necessary.

Other information: 

Fig 1: Identifying Connector A Terminals
GLL125120Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohm Meter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Connector B
GLL127568Courtesy of VOLVO CARS OF NORTH AMERICA.


Check cable between ECC control module #B2 and engine control module (ECM) for an open-circuit according to Open-Circuit, Permanent Faults and a short-circuit to supply voltage according to Short-Circuit To Supply Voltage. Permanent Faults and for a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Also check cable between ECC control module #B2 and combined instrument panel combined instrument panel #A26 for a short-circuit to ground according to Short-Circuit To Supply Voltage. Permanent Faults and a short-circuit to ground according to Short-Circuit To Ground, Permanent Faults .

Remedy as necessary.

Other information: 

Fig 1: Identifying Connector A Terminals
GLL125120Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Connector B
GLL127568Courtesy of VOLVO CARS OF NORTH AMERICA.