Electronic Shift Lever System

P410 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: "P" Position Switch Indicator Light Circuit
- "P" Position Switch Indicator Light Circuit

DESCRIPTION

The indicator light comes on when the P position switch (transmission shift main switch) is pressed (park (P) selected), goes off when a shift state other than park (P) is selected and goes off when a system malfunction occurs. Then an error message is displayed on the multi-information display.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK P POSITION SWITCH (INDICATOR LIGHT)

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

(b) Depress the brake pedal and move the shift lever to select neutral (N).

(c) Inspect the indicator light condition by operating the P position switch (transmission shift main switch).

Result:

(d) Turn the power switch off.

B -- CHECK HARNESS AND CONNECTOR (P POSITION SWITCH POWER SOURCE CIRCUIT)
A -- Continue to next step.

2. CHECK P POSITION SWITCH (INDICATOR LIGHT)

(a) Disconnect connector A21 from the transmission control ECU assembly.

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

(c) Inspect the indicator light condition by operating the P position switch (transmission shift main switch).

Result:

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

(d) Turn the power switch off.

(e) Connect the transmission control ECU assembly connector.

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

3. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU - P POSITION SWITCH)

(a) Disconnect connector A21 from the transmission control ECU assembly.

(b) Disconnect connector H81 from the P position switch (transmission shift main switch).

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

Standard Resistance (Check for Short):

Text in Illustration

(d) Connect the P position switch (transmission shift main switch) connector.

(e) Connect the transmission control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE P POSITION SWITCH

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

(a) Disconnect the connector from the P position switch (transmission shift main switch).

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

Standard Voltage:

Text in Illustration

(c) Connect the P position switch (transmission shift main switch) connector.

NG -- CHECK AND REPAIR POWER SOURCE CIRCUIT
OK -- Continue to next step.

5. INSPECT P POSITION SWITCH

(a) Disconnect the connector from the P position switch (transmission shift main switch).

(b) Apply auxiliary battery voltage between terminals H81-6 (IND+) and H81-7 (IND-) and check the indicator light.

Result:

Text in Illustration

HINT
Terminals No. 1 and No. 8 on the component side connector are empty.

(c) Connect the P position switch (transmission shift main switch) connector.

NG -- REPLACE P POSITION SWITCH
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU - P POSITION SWITCH)

(a) Disconnect connector A21 from the transmission control ECU assembly.

(b) Disconnect the connector from the P position switch (transmission shift main switch).

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

Standard Resistance (Check for Open):

Text in Illustration