P3102-599

P112 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3102-524: Transmission Control ECU Malfunction

DTC P3102-524 - Transmission Control ECU Malfunction

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DTC P3102-582 - Transmission Control ECU Malfunction

DTC P3102-597 - Transmission Control ECU Malfunction

DTC P3102-598 - Transmission Control ECU Malfunction

DTC P3102-599 - Transmission Control ECU Malfunction

DESCRIPTION

When a signal is input from the P position switch or selector lever, the HV 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 in order to mechanically lock or unlock the counter drive gear in the HV transaxle assembly. If the shift control actuator is in the P position, the transmission control ECU assembly transmits a P position (PPOS) signal to the HV control ECU.









WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - TRANSMISSION CONTROL ECU ASSEMBLY AND POWER SOURCE CONTROL ECU)




(a) Disconnect the H17 HV control ECU connector.




(b) Disconnect the T4 transmission control ECU assembly connector.




(c) Disconnect the P6 power source control ECU connector.
(d) Measure the voltage between the terminals of the HV control ECU connector and body ground.
Standard voltage:





(e) Measure the resistance between the wire harness side connectors.
Standard resistance (Check for open):





Standard resistance (Check for short)





(f) Reconnect the power source control ECU connector.
(g) Reconnect the transmission control ECU assembly connector.
(h) Reconnect the HV control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (CHECK FOR +B SHORT IN WIRE HARNESS)




(a) Inspect the HV control ECU using an oscilloscope.
(b) Turn the power switch ON (IG).




(c) Check the waveforms of the voltages between the terminals PCON (H17-9) and GND1 (H14-1), and terminals PPOS (H17-10) and GND1 (H14-1), of the HV control ECU connectors, in order to check for +B short in the signal lines PCON and PPOS.
OK:
No +B short in either PCON or PPOS signal lines.
- If there is +B short in the signal line, the output voltage is constantly between 9 V and 14 V.
- If the signal lines are normal, the waveforms are displayed as shown in the diagram.

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

3. READ OUTPUT DTC (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:
DTCs are output
YES -- GO TO RELEVANT DTC CHART
NO -- REPLACE HV CONTROL ECU, TRANSMISSION ECU AND POWER SOURCE CONTROL ECU