P085D-582

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 input from the P position switch (transmission shift main switch) or shift lever, the power management control ECU (HV CPU) 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.

P position state (engaged or released) of the actuator assembly is sent to the power management control ECU (HV CPU) 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 (ELECTRONIC SHIFT LEVER SYSTEM) Electronic Shift Lever System
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - TRANSMISSION CONTROL ECU)

(a) Disconnect connector A20 from the power management control ECU.

(b) Disconnect connector A22 from the transmission control ECU assembly.

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

(d) 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 power management control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

(e) Turn the power switch off.

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





(g) Connect the transmission control ECU assembly connector.

(h) Connect the power management control ECU connector.

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

3. CHECK POWER MANAGEMENT CONTROL ECU (PCON SIGNAL)

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

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









Result:





Text in Illustration





(c) Turn the power switch off.

B -- REPLACE POWER MANAGEMENT CONTROL ECU Components
A -- Continue to next step.

4. CHECK POWER MANAGEMENT CONTROL ECU (PPOS SIGNAL)

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

(b) Connect an oscilloscope between the power management control ECU 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 POWER MANAGEMENT CONTROL ECU

(a) Replace the power management 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 (HYBRID CONTROL)

(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