0400 - Electrical wiring diagram: Exhaust gas recirculation with auto. trans. Model years 1987 and 1988 Engine 601 with code 620 in model 124 · ra070160104a4x · Mercedes-Benz WIS

07.1-400 Electrical wiring diagrams

The wiring diagrams up to and including 06/1991 or model year 1992 are dealt with below.

As of 07/1991 and model year 1992 are located to the relevant wiring diagram volume.

Model 124 as of 07/1991 and model year 1992 Volumes 4 and 4.1

Model 124 as of 10/1992

Volumes 1 and 2

Model 201 as of 07/1991 and model year 1992 Volumes 5 and 5.1

Model 202 as of 06/1993 and model year 1994 Volumes 1 and 2

Engine 601 with code 620 in model 124
Model years 1987 and 1988
Electrical wiring diagram exhaust gas recirculation with automatic transmission

a	To fuse 7 terminal 15
b	To instrument cluster
c	To kickdown switch
d	To fuse 5 terminal 15
e	To temperature switch 100 °C (S25/1)
f	To coolant gauge temperature sensor (B13)

B6	Hall-effect speed sensor
L3	Speed sensor starter ring gear
N15	Relay kickdown cut-out (only with automatic transmission)
N37/1	AGR control unit
S25/7	Temperature switch 25 °C, AGR
S25/9	Temperature switch 97 °C, AGR
S27/3	Microswitch AGR
S27/4	Microswitch vacuum control flap
W1	Main ground (footwell)
W10	Ground, battery, spring dome
X25	Connector preglow cable harness
X26	Connector engine cable harness
X62	Connector speed sensor starter ring gear
Y27	Change-over valve AGR
Y28	Change-over valve vacuum control flap

Note

Unidentified grounding points are connected to engine ground or body ground.

0400 - Electrical wiring diagram: Exhaust gas recirculation with auto. trans. Model years 1987 and 1988 Engine 601 with code 620 in model 124