P085D

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P085D-582,P085D-599,P0861-597,P0862-598: Gear Shift Control Module "A" Performance
P0862-598 - Gear Shift Control Module "A" Communication Circuit High

DESCRIPTION

When a signal is received from the P position switch (transmission shift main switch) or shift lever, the hybrid vehicle control ECU transmits a P position control (PCON) signal to the transmission control ECU assembly. Based on this signal, the transmission control ECU assembly actuates the shift control actuator assembly in order to mechanically lock or unlock the counter drive gear in the hybrid vehicle transaxle assembly.

The P position state (engaged or released) of the actuator assembly is sent to the hybrid vehicle control ECU as a P position (PPOS) signal.









WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (TRANSMISSION CONTROL)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Chassis / Transmission Control / Trouble Codes.

(d) Check if DTCs are output.

Result:









(e) Turn the power switch off.

B -- GO TO DTC CHART
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR

(a) Disconnect connector A58 from the hybrid vehicle control ECU.

(b) Disconnect connector A36 from the transmission control ECU assembly.

(c) Disconnect connector F52 from the power management control ECU assembly.

(d) Turn the power switch on (IG).

(e) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





Text in Illustration





NOTICE:
Turning the power switch on (IG) with the hybrid vehicle control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

(f) Turn the power switch off.

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

Standard Resistance (Check for open):





Standard Resistance (Check for short):





(h) Connect the power management control ECU assembly connector.

(i) Connect the transmission control ECU assembly connector.

(j) Connect the hybrid vehicle control ECU connector.

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

3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY (PCON SIGNAL)

(a) Turn the power switch on (IG).

(b) Connect an oscilloscope between the transmission control ECU assembly terminals specified in the table below, and measure the waveform.









Result:





Text in Illustration





(c) Turn the power switch off.

B -- REPLACE HYBRID VEHICLE CONTROL ECU Components
A -- Continue to next step.

4. CHECK TRANSMISSION CONTROL ECU ASSEMBLY (PPOS SIGNAL)

(a) Turn the power switch on (IG).

(b) Connect an oscilloscope between the transmission control ECU assembly terminals specified in the table below, and measure the waveform.









Result:





Text in Illustration





(c) Turn the power switch off.

B -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components
A -- Continue to next step.

5. REPLACE HYBRID VEHICLE CONTROL ECU

(a) Replace the hybrid vehicle control ECU Components.

NEXT -- Continue to next step.

6. CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Read and record the DTCs and freeze frame data.

(e) Clear DTCs and freeze frame data.

(f) Turn the power switch off.

NEXT -- Continue to next step.

7. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG) and leave the vehicle as it is for 10 seconds.

(c) Depress the brake pedal, move the shift lever to N and leave the vehicle as it is for 10 seconds.

(d) Push the P position switch (transmission shift main switch) and leave the vehicle as it is for 10 seconds.

(e) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(f) Check if DTCs are output.

Result:





(g) Turn the power switch off.

B -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components

A -- COMPLETED