Jetta GLX V6-2.8L (AFP) (2002)
Continuation
If the display does not change:
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Remove wiper arms and plenum chamber cover.
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Connect VAG1598/31 test box to Engine Control Module (ECM) wiring harness. Engine Control Module (ECM) is not connected by this action.
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Check wiring for open circuit between test box sockets 40 + 41 and air conditioner system using wiring diagram.
Wire resistance: max. 1.5 ohms
If no malfunction can be found in the wiring:
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Check function of air conditioner control module.
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Check DTC memory. If necessary, repair any malfunctions and erase DTC memory.
If DTC memory has been erased or the Engine Control Module (ECM) was disconnected from permanent battery (B+) voltage, the readiness code
must be generated again.