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Home >> Volkswagen >> 2013 >> Passat TDI SE, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> 2.0L - Generic Scan Tool - Engine Code: CKRA >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Can Bus Terminal Resistance, Checking >> Checking Wiring
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Checking Wiring

-- Remove the Engine Control Module (ECM) -J623-. Refer to the service information for removal and installation procedures.

-- Using a multimeter, measure the resistance of the CAN bus low and CAN bus high circuits. Refer to Wiring Diagrams for location.

Data Bus On Board Diagnostic Interface -J533- electrical harness T20 D connector terminals Engine Control Module - J623 - electrical harness connector T94 terminals
6 67
16 68

Specified value: 1.5 Ω Max.

If the specification was not obtained:

-- Check the wires for a short circuit to each other, a short to battery voltage, and a short to ground.

-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.

-- Repair as necessary.

If no malfunction is found in the wiring:

-- Replace the Engine Control Module - J623 -. Refer to the service information for removal and installation procedures.

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