P0882

DTC P0882 TCM POWER INPUT SIGNAL
Description
- When the power supply to the TCM is cut "OFF", for example because the battery is removed, and the self-diagnostics memory function stops, malfunction is detected.

On Board Diagnosis Logic
- This is an OBD-II self-diagnostic item.
- Diagnostic trouble code "TCM POWER INPT SIG" with CONSULT-II or P0882 without CONSULT-II is detected when voltage supplied to TCM is too low.

Possible Cause
- Harness or connectors (Battery or ignition switch and TCM circuit is open or shorted.)
- A/T PV IGN relay

DTC Confirmation Procedure

CAUTION:
- Always drive vehicle at a safe speed.
- Be careful not to rev engine into the red zone on the tachometer.

NOTE: If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch "OFF" and wait at least 10 seconds before performing the next test.

After the repair. perform the procedure to confirm the malfunction is eliminated.

WITH CONSULT-II





1. Turn ignition switch "ON". (Do not start engine.)
2. Select "A/T" with "DATA MONITOR" mode in CONSULT-II.
3. Start engine.
4. Depress accelerator pedal or drive vehicle and maintain the condition for at least 20 consecutive seconds.
TURBINE REV: More than 800 rpm
5. If DTC is detected, go to AT-589, "Diagnostic Procedure".

Wiring Diagram-AT-PWR/IN

AT-PWR/IN-01:

AT-PWR/IN-01

Diagnostic Procedure
1. CHECK TCM POWER SOURCE CIRCUIT
1. Turn ignition switch "ON". (Do not start engine.)








2. Check voltage between TCM terminals and ground.
3. Turn ignition switch "OFF".





4. Check voltage between TCM terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

2. DETECT MALFUNCTIONING ITEM
Check the following:
- Harness for short or open between battery and TCM terminal 27
- Harness for short or open between ignition switch and TCM terminals 1, 34, 38 and 39
- 10A fuse [No. 19, located in the fuse block (J/B) or No. 48, located in the IPDM E/R]
- Ignition switch. Refer to "POWER SUPPLY ROUTING CIRCUIT"
- A/T PV ION relay. Refer to "Component Inspection"
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.

3. CHECK TCM GROUND CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect TCM harness connector.





3. Check continuity between TCM terminals 14 (B), 48 (B) and ground.
Continuity should exist.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK DTC
Check again. Refer to "DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.

5. CHECK TCM
1. Check TCM input/output signal. Refer to "TCM Input/Output Signal Reference Values".
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.

Component Inspection
A/T PV IGN RELAY
1. Apply 12V direct current between A/T PV IGN relay terminals 1 and 2.








2. Check continuity between relay terminals 3 and 5.
3. If NG, replace A/T PV IGN relay.