ELECTRONIC SHIFT LEVER SYSTEM "P" Position Switch Indicator Light Circuit

DESCRIPTION

The P position switch (transmission shift main switch) indicator light comes on when the P position switch (transmission shift main switch) is pressed (park (P) is selected) and turns off when a shift state other than park (P) is selected or a system malfunction occurs. A warning message will also be displayed on the multi-information display if a malfunction occurs.

WIRING DIAGRAM

PROCEDURE

1. CHECK P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH) (INDICATOR LIGHT)

   
   

   1. Turn the power switch on (IG).

   2. Depress the brake pedal and select neutral (N).

   3. Operate the P position switch (transmission shift main switch) and check the condition of the indicator light.

      Result
      Condition of Indicator Light Proceed to Indicator light illuminates A Indicator light does not come on. B

   4. Turn the power switch off.

   
   

   B

   CHECK HARNESS AND CONNECTOR (P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH) POWER SOURCE CIRCUIT) Click here

   A

2. CHECK P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH) (INDICATOR LIGHT)

   
   

   1. Disconnect the I3 hybrid vehicle control ECU connector.

   2. Turn the power switch on (IG).

   3. Inspect the P position switch (transmission shift main switch) indicator light condition.

      Result
      Result Proceed to Indicator light does not go off. (Remains on) A Indicator light goes off. B

      Note

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

   4. Turn the power switch off.

   5. Reconnect the I3 hybrid vehicle control ECU connector.

   
   

   B

   REPLACE HYBRID VEHICLE CONTROL ECU Click here

   A

3. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH))

   
   

   1. Disconnect the I3 hybrid vehicle control ECU connector.

   2. Disconnect the I56 P position switch (transmission shift main switch) connector.

   3. 

      *a	Front view of wire harness connector (to Hybrid Vehicle Control ECU)
      *b	Front view of wire harness connector (to P Position Switch (Transmission Shift Main Switch))

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

      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition I3-39 (IND) or I56-7 (IND-) - Body ground and other terminals Power switch off 10 kΩ or higher

   4. Reconnect the I56 P position switch (transmission shift main switch) connector.

   5. Reconnect the I3 hybrid vehicle control ECU connector.

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH)

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

4. CHECK HARNESS AND CONNECTOR (P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH) POWER SOURCE CIRCUIT)

   
   

   1. Disconnect the I56 P position switch (transmission shift main switch) connector.

   2. 

      *a	Front view of wire harness connector (to P Position Switch (Transmission Shift Main Switch))

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

      Standard Voltage
      Tester Connection Condition Specified Condition I56-6 (IND+) - Body ground Power switch off 9 to 14 V

   3. Reconnect the I56 P position switch (transmission shift main switch) connector.

      Result
      Proceed to OK NG

   
   

   NG

   CHECK AND REPAIR POWER SOURCE CIRCUIT

   OK

5. INSPECT P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH)

   
   

   1. Disconnect the I56 P position switch (transmission shift main switch) connector.

   2. 

      *a	Component without harness connected (P Position Switch (Transmission Shift Main Switch))

      Apply auxiliary battery voltage between terminals I56-6 (IND+) and I56-7 (IND-) and check the indicator light.

      Result
      Condition Specified Condition Auxiliary battery voltage applied between terminals I56-6 (IND+) and I56-7 (IND-) Comes on

      Tech Tips

      Terminals 1 and 8 of the P position switch (transmission shift main switch) side connector are empty.

   3. Reconnect the I56 P position switch (transmission shift main switch) connector.

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH)

   OK

6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - P POSITION SWITCH (TRANSMISSION SHIFT MAIN SWITCH))

   
   

   1. Disconnect the I3 hybrid vehicle control ECU connector.

   2. Disconnect the I56 P position switch (transmission shift main switch) connector.

   3. 

      *a	Front view of wire harness connector (to Hybrid Vehicle Control ECU)
      *b	Front view of wire harness connector (to P Position Switch (Transmission Shift Main Switch))

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition I3-39 (IND) - I56-7 (IND-) Power switch off Below 1 Ω

   4. Reconnect the I56 P position switch (transmission shift main switch) connector.

   5. Reconnect the I3 hybrid vehicle control ECU connector.

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE HYBRID VEHICLE CONTROL ECU Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR