9000 CDE V6-2962cc 3.0L DOHC (B308) (1995)
Trip Computer: Component Tests and General Diagnostics
SCC Trip Computer
FAULT DIAGNOSIS HINTS
The trip computer is activated by turning the ignition switch to the Drive position.
1. Check that fuses 13 and 19 are OK and supplied with current.
2. Check that current is supplied to pin 1 of the trip computer, via clock 49 and pin 6.
3. Check that current is supplied to vehicle speed sensor 132, terminal 1, and from the vehicle speed sensor, terminal 2, to the EDU trip
computer, terminal 9.
4. Check that current is supplied from the EDU to the SCC.
5. Check that the contact surfaces of the connectors are undamaged and clean. This is important as the currents involved are weak.
6. Check the wiring harness and ground connections.
EDU 3 Trip Computer and Clock
FAULT DIAGNOSIS HINTS
Check fuses 13 and 17.
Check the relevant wiring harness connections, connectors and grounding points.
Resistances For Outside Temperature Sensor
Minimum
Maximum
Kohms
Kohms
+/- 0°C
5.8
6.2
+ 10°C
3.8
4.1
+ 20°C
2.5
2.1
+ 30°C
1.7
1.9
Resistances For Engine Coolant Temperature Sensor
Minimum
Kohms
+/- 0°C
5.7
+ 10°C
3.7
+ 20°C
2.4
+ 30°C
1.6
+ 60°C
0.57
+ 80°C
0.3
+ 100°C
0.18
+ 110°C
0.14
+ 120°C
0.11