Connector Pinouts, Wiring Diagrams & Installation Instructions – Land Rover Td5

Connector Pinouts

The connectors below are drawn viewed from the wiring side, i.e. looking at the connector housings when installed on the ECU. The pins used by the various map switches are highlighted. Use the diagram below to find possible map switch inputs which are available (not connected) on your ECU.

Wiring Diagrams & Installation Instructions

The diagrams and notes below show you how to wire up a map switch using the selected input pin.

Switch to Ground Pins A33, B9, B23, B34, B20 are used with an ON/OFF switch to earth. A cable may be routed from the ECU pin to somewhere convenient, maybe behind the dash. Any type of latching (non-momentary) ON/OFF switch and any convenient earth point near to the switch may be used.	Switch to +12V Pins B15, B11 and B17 are used with a switch to +12V. A cable may be routed from the ECU pin to somewhere convenient, maybe behind the dash. Any type of latching (non-momentary) ON/OFF switch and any convenient +12V supply point (preferably fused and ignition switched) near to the switch may be used.
Inlet Air Temperature Sensor The inlet air temperature sensor map switch uses a momentary (non-latching, typically push-button) switch connected directly across the inlet air temperature sensor, from Pin A34 to either Pin A17 or any convenient ground, maybe behind the dash.	OBDII KWP2000 The OBDII map switch uses specific KWP2000 messages sent over the OBDII K-Line to switch maps. Most vehicles will already have an OBDII socket correctly wired.	CAN Bus The CAN map switch uses specific CAN Bus messages sent to the ECU to switch maps. This can only be installed on ECUs with the Intel 82527 CAN chip (typically Automatic ECUs or ECUs retrofitted with the CAN components).