Volkswagen Passat 1995 Official Factory Repair Manual page 1598

Diagnostic Trouble Code (DTC) tables:
Control module and output signals
SAE-
DTC
P1602 Voltage supply - terminal 30
Voltage too low
P1603 Internal Control Module
Memory Check Sum Error
P1604 Internal Control Module
Memory Check Sum Error
P1610 Internal Control Module
Memory Check Sum Error
P1611 Request MIL on, Short circuit
to Ground (GND)
P1613 Request MIL on, Open
circuit/short circuit to B+
P1640 Internal Control Module
Memory Check Sum Error
P1681 Control unit programming
programming not finished
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW...
DTC text Corrective action
- Check voltage supply for control module
Page 24-101
- Replace Motronic Engine Control Module
(ECM) -J220- Page 24-105
- Check activation of Malfunction Indicator Lamp
(MIL) -K83- according to wiring diagram:
Electrical Wiring Diagrams, Troubleshooting
&Component Locations
- Replace Motronic Engine Control Module
(ECM) -J220- Page 24-105
Page 36 of 41
ST-91
6/12/2004