Totally Integrated Power Module (TIPM)

P0887-TCM POWER CONTROL CIRCUIT HIGH







- When Monitored:
With the ignition on. Battery voltage greater than 10 volts.

- Set Condition:
A shorted condition is detected in the TIPM TCM Power control circuit.





1. CHECK IF THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read TIPM DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 5

2. (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT SHORT TO VOLTAGE




1. Turn the ignition off
2. Disconnect the TIPM C10 harness connector.
3. Disconnect the PCM C4 harness connector.
4. Ignition on, engine not running.
5. Measure the voltage of the (T16) Transmission Control Output circuit.

Is the voltage above 10.0 v?

Yes

- Repair the (T16) Transmission Control Output circuit for a short to voltage.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. 42RLE Transmission Verification Test

No

- Go To 3

3. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR AN OPEN




1. Reconnect the TIPM C10 harness connector.
2. Ignition on, engine not running.
3. Using the scan tool under the TIPM Actuators, actuate the Transmission.
4. Using a 12-volt test light connected to ground, check the (T16) Transmission Control Output circuits.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly at all the (T16) Transmission Control Output circuits?

Yes

- Go To 4

No

- Repair the (T16) Transmission Control Output circuit for an open.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. 42RLE Transmission Verification Test.

4. TOTALLY INTEGRATED POWER MODULE
1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Check the TIPM harness connector terminals for corrosion, damage, or terminal push out
3. Pay particular attention to all power and ground circuits.

Were any problems found?

Yes

- Repair as necessary.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. 42RLE Transmission Verification Test.

No

- Replace the Totally Integrated Power Module.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. 42RLE Transmission Verification Test.

5. INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
3. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
4. Look for the data to change or for the DTC to reset during the wiggle test.

Were any problems found?

Yes

- Repair as necessary.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. 42RLE Transmission Verification Test.

No

- Test complete.