Engine Control Module

System
KE - Jetronic

Location
- Behind battery (260E, 300E, & 300CE/TE)
- Kick panel passenger side (300SE, 300SEL)

Legend
1 - Main relay power (Yel)
2 - Ground (Brn)
3 - ISC Valve control (Red/Wht)
4 - NO CONNECTION
5 - Full load throttle (Gry/Yel)
6 - Speed sensor (Grn/Yel)
7 - Ground/Return for cool. sensor (Brn/Wht)
- Coolant sensor return for MY 1988 California version
8 - Oxygen sensor input (Grn)
9 - Fuel pump relay A/T (Grn/Blu)
10 - Electro-hydraulic actuator control(Brn/Blk)
11 - Altitude sensor (Blu/Red)
12 - Electro-hydraulic actuator supply (Brn/Blk)
13 - Closed throttle (Brn/Yel)
14 - NO CONNECTION
15 - Check engine indicator (Red/Grn)
16 - Ignition switch (Vio)
17 - Air flow sensor Input (Blu/Wht)
18 - Air flow sensor reference (Blu/Grn)
19 - A/C compressor (Blu/Yel)
20 - Ground (Brn/Red)
21 - Coolant temperature sensor (Grn/Red)
22 - NO CONNECTION
23 - Diagnostic
24 - Deceleration micro-switch input (Gry/wht)
25 - TD signal (Grn/Yell)