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Volvo
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2007
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V70 Base, 2.4 64
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Repair and Diagnosis
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Electrical
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Body Electrical
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Central Electronic Module (CEM) & Accessory Electronic Module (AEM) Diagnostic Trouble Codes
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CEM-1A21: Increased Power Supply Relay. Signal Too High. Permanent Fault (2001-2004)
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Signal too high. Permanent fault
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Replacing the CEM
Replacing the CEM
Replace the relay.
Additional information
For interior relay unit, see
Central electronic module (CEM), replacing
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