14 Pin Info................. From a 2002 Jetta and Bentley Manual
Pin #
1. From oil pressure switch (F1) to Cluster, Blue side T32/10
2. From VSS sensor (G22/1) to Splice B163 Plus Connection (15) in wiring harness interior and through/to Fuse S7 (these are black wires) (sw)
3. From VSS (G22/2) to Cluster, Blue side T32/28
4. From engine coolant temperture (ECT) sensor (G2/1) to Cluster, Blue side T32/8 (temp gauge) (page 97-677)
5. From Fuse 232 to Splice B168 on to T10f/5 connector (IP connector) to N146 (Quantity Adjuster). Splice B168 also has a wire that (see page 97-683, Bentley Manual) goes to T6/4 (brown connector, see page 97-676). From there everything is internal of the wiring harness to the ECU via T121/1 and T121/2. Understanding Splice B168 is important.
6. From Fuse 234 to Splice 100 (page 97-683) on to T10f/10 connector (IP connector) to N108 (Cold Start Injector). Also, from Splice 100 the wire (ge/sw.... yellow/black) goes to T6/5 (brown connector) from there to Splice E29 (page 97-678) which is all internal of the engine harness. Splice E29 has wires that go to N239, N18, N75, & G70 (all on page 97-678). Also, Splice E29 has one wire that goes to J370 (GP Relay on page 97-675).
7. From Ground 608 (page 97-682) thru T14a/7 to G22/3 (VSS sensor). Appears that Ground 608 can be "grounded" anywhere it will work.
8. This is a "dead in circuit." There is no pin on the ECU side of the connector (T14a/8). However, in the other direction going away from the ECU there is a splice. So, from my notes, quote: "......it appears that the splice involves T6/1 (Brown Connector) and is important."
9. From G2/2 Engine Coolant Temp Sensor (page 97-677) to Splice 269 (page 97-683) ultimately to T32/7 (Cluster, Blue side) which is a "ground." G32 (Coolant Level Sensor) also connects to Splice 269. And, also, Splice 269 has two more wires that involve the Multi-Function Indicator (MFI) (outside air temp sensor and MFI switches, page 97-683). Lastly, the Windshield Washer Fluid level sensor (G33) connects to Splice 269.
10. From relay panel (Relay 2, Load Reduction) on to Splice A80 ((x) in instrument panel wiring harness) to Fuse S237 to ECU T121/88 (page 97-675). Also, Splice A80 has a wire going to J59 (Load Reduciton Relay) and D (Ignition Switch, terminal 75), page 97-494.
Pins 11 thru 14 are not used...............OPEN
Double check this info before using.
Hope it's helpful!
Andy