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Home >> Volvo >> 2008 >> S40 T-5, FWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Central Electronic Module (CEM) Diagnostic Trouble Codes - 5 Of 10 (544 Body) >> CEM-8F34: Right-Hand Turn Signal Lamp. Signal Too Low (2004-2011) >> Signal Too Low (2004, 2005, 2006, 2007) >> Checking >> Checking Component And Wiring

Checking Component And Wiring

On 5-door models 

Check the voltage on the right-hand headlamp connector terminal #1 to the output on the central electronic module (CEM). The voltage must be approximately 12 V when the right-hand turn signal lamp is activated.

Check the control signal cable. Check for a short-circuit to ground.

Take readings between:

Check the voltage on the rear right-hand lamp housing connector terminal #3 to the output on the central electronic module (CEM). The voltage must be approximately 12 V when the right-hand turn signal lamp is activated.

Check the control signal cable. Check for a short-circuit to ground.

Take readings between:

On 4-door models 

Check the voltage on the right-hand headlamp connector terminal #1 to the output on the central electronic module (CEM). The voltage must be approximately 12 V when the right-hand turn signal lamp is activated.

Check the control signal cable. Check for a short-circuit to ground.

Take readings between:

Check the voltage on the rear right-hand lamp housing connector terminal #1 to the output on the central electronic module (CEM). The voltage must be approximately 12 V when the right-hand turn signal lamp is activated.

Check the control signal cable. Check for a short-circuit to ground.

Take readings between:

Remedy as necessary.

Other information 

Fig 1: Identifying 6-Bit Connector
GLL140609Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying 4-Bit Connector
GLL140618Courtesy of VOLVO CARS OF NORTH AMERICA.
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