Checking the sensor cable for open
circuit or shortcircuit
Coolant temperature sensor
Tools:
885675 Break-out cable
88890074 Multimeter
1 NOTICE! Cut the current with the main switch.
2
Disconnect the connector from the sensor
3
Connect break-out cable 885675 to the cable har-
ness connector to the engine control unit.
4 Remove connector B from the engine control unit.
5 Use multimeter 88890074 to do a resistance meas-
urement against the engine control unit connector
B.
Measurement points Nominal value
2 (885675)– 27 (EMS2, conn.B) R ≈ 0 Ω
2 (885675)– 18 (EMS2, conn.B) R ≈ ∞ Ω
1 (885675)– 27 (EMS2, conn.B) R ≈ ∞ Ω
1 (885675)– 18 (EMS2, conn.B) R ≈ 0 Ω
NOTICE! Measurement is done to eliminate short cir-
cuiting or
breaks in the cable to the engine control unit.
IMPORTANT!
Be very careful when measuring inside the connector,
to ensure that no pin is damaged.
4
1
8
5
9
16
13
20
17
24
21
28
25
40
37
44
41
48
45
52
49
56
53
52
60
B
885675
2
3
4
5
1
2
885675
885675
2
3
4
5
1
1
B
P0004936
30-2 Fault Tracing
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