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Test readings TCS (382)/ESP (671)

Test readings TCS (382)/ESP (671)



Scope

Following are readings and directions for measuring signals and levels of the transmission control module. Pin numbers missing in the table are not used.

Remember


• Observe the test criteria and use common sense when assessing the test results.

• The test reading presented here are with the ignition ON unless stated otherwise.

• Check first that the control module is receiving power and is grounded.

• Then check all the sensor inputs and signals from other systems.

• Finally, check the control module outputs. Remember that test values do not confirm whether the actuator is in working order.

• If any of the test readings is incorrect, use the wiring diagram to locate the leads, connectors or components that should be checked further.

• Specified test readings are for a calibrated Fluke 88/97.

• Test readings %(+) and ms(+) show the signal pulse ratio and pulse width respectively. A scan tool that can measure pulse ratio and pulse width respectively must be used. The sign indicates a positive trigger pulse, TRIG+.


Connecting and test readings

TCS (382)


ESP (671)


Note

All units on the I and P buses send signals.


Pin, connector A Component/Function In/Out Test criteria Test across Test reading
1 P-bus In/Out 1-2 2-3 V
2 P-bus In/Out 2-1 2-3 V
3 Not connected
4 Not connected
5 Not connected
6 Not connected
7 Front right wheel sensor signal input In Rotate wheel 1 rev per second 7-8 >200 mV AC
8 Front right wheel sensor reference ground In Rotate wheel 1 rev per second 8-7 >200 mV AC
9 Rear right wheel sensor signal input In Rotate wheel 1 rev per second 9-10 >200 mV AC
10 Rear right wheel sensor reference ground In Rotate wheel 1 rev per second 10-9 >200 mV AC
11 Ground, logic In 11-12 B+
12 +30 voltage, logic In 12-11 B+
13 P-bus In/Out 13-14 2-3V
14 P-bus In/Out 14-13 2-3V
15 +X In 15-B- B+
16 Not connected
17 Brake-light switch Brake pedal inactive 17-B+ B+
Brake pedal active 17-B+ <0.5V
18 Vehicle speed signal to CIM Out
19 Front left wheel sensor signal input Rotate wheel 1 rev per second 19-20 >200 mV AC
20 Front left wheel sensor reference ground Rotate wheel 1 rev per second 20-19 >200 mV AC
21 Rear left wheel sensor signal input Rotate wheel 1 rev per second 21-22 >200 mV AC
22 Rear left wheel sensor reference ground Rotate wheel 1 rev per second 22-21 >200 mV AC
23 +15 In
24 Ground, pump motor In 24-25 B+
25 +30 voltage, pump motor In 25-24 B+