Part 2

AA80F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P0872: Transmission Fluid Pressure Sensor / Switch "C" Circuit Low
P0872 - Transmission Fluid Pressure Sensor / Switch "C" Circuit Low

- When either condition below is met: Condition (1) or (2)

Condition (1)

- When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)

Condition (a)





Condition (b)





Condition (c)





Condition (d)





Condition (e)





Condition (f)





Condition (g)





Condition (h)





Condition (2)

- When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)

Condition (a)





Condition (b)





Condition (c)





Condition (d)





Condition (e)





Condition (f)





Condition (g)





Condition (h)





OFF malfunction (F)





- When either condition below is met: Condition (1) or (2)

Condition (1)

- When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)

Condition (a)





Condition (b)





Condition (c)





Condition (d)





Condition (e)





Condition (f)





Condition (g)





Condition (h)





Condition (2)

- When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)

Condition (a)





Condition (b)





Condition (c)





Condition (d)





Condition (e)





Condition (f)





Condition (g)





Condition (h)





TYPICAL MALFUNCTION THRESHOLDS

- When both conditions below are met: OFF malfunction (A) and OFF malfunction (B), (C), (D), (E) or (F)

2 detections are necessary per driving cycle:

1st detection: temporary flag on

2nd detection: pending fault code on

OFF malfunction (A)

*





OFF malfunction (B)

- When either condition below is met: Condition (1) or (2)

Condition (1)





Condition (2)





OFF malfunction (C)

- When either condition below is met: Condition (1) or (2)

Condition (1)





Condition (2)





OFF malfunction (D)

- When either condition below is met: Condition (1) or (2)

Condition (1)





Condition (2)





OFF malfunction (E)

- When either condition below is met: Condition (1) or (2)

Condition (1)





Condition (2)





OFF malfunction (F)

- When either condition below is met: Condition (1) or (2)

Condition (1)





Condition (2)





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs AA80F Automatic Transmission System.

PROCEDURE

1. READ VALUE USING DATA LIST (TPS 1 SW SIGNAL)

(a) Connect terminals TPS1 and E1 of the E5 and E6 TCM connectors.





HINT
Before connecting the terminals, do visual and contact pressure checks on the TCM connectors.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Powertrain / ECT / Data List.

(f) Read the value displayed on the Techstream.

Result:





B -- CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)
A -- Continue to next step.

2. REPLACE TCM

(a) Replace the TCM Removal.

NEXT -- PERFORM A/T CODE REGISTRATION Registration

3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)

(a) Disconnect the E50 transmission wire connector.





(b) Disconnect the E6 TCM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT TRANSMISSION WIRE (OIL PRESSURE SWITCH)

(a) Disconnect the oil pressure switch connector.





(b) Disconnect the E50 transmission wire connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE TRANSMISSION WIRE Removal

OK -- REPLACE OIL PRESSURE SWITCH Disassembly