Component Tests and General Diagnostics

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 is pressed (the P position is engaged), goes off when the switch is released (the P position is disengaged) and blinks when a system malfunction occurs.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK TRANSMISSION SHIFT MAIN SWITCH (INDICATOR LIGHT)

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

(b) Depress the brake pedal and move the selector lever to N.

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

Result





(d) Turn the power switch off.

B -- CHECK HARNESS AND CONNECTOR (TRANSMISSION SHIFT MAIN SWITCH POWER SOURCE CIRCUIT)
A -- Continue to next step.

2. CHECK TRANSMISSION SHIFT MAIN SWITCH (INDICATOR LIGHT)

(a) Disconnect the A23 transmission control ECU assembly.

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

(c) Inspect the indicator light condition by operating the transmission shift main switch (P position 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 - TRANSMISSION SHIFT MAIN SWITCH)

(a) Disconnect the A23 transmission control ECU assembly connector.

(b) Disconnect the b1 transmission shift main switch (P position switch) connector.

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





Standard Resistance (Check for Short):





Text in Illustration





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

(e) Connect the transmission control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE TRANSMISSION SHIFT MAIN SWITCH

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

(a) Disconnect the b1 transmission shift main switch (P position switch) connector.

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





Standard Voltage:





Text in Illustration





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

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

5. INSPECT TRANSMISSION SHIFT MAIN SWITCH

(a) Disconnect the b1 transmission shift main switch (P position switch) connector.

(b) Apply auxiliary battery voltage between terminals b1-6 (IND+) and b1-7 (IND-) and check the indicator light.





Result:





Text in Illustration





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

NG -- REPLACE TRANSMISSION SHIFT MAIN SWITCH
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU - TRANSMISSION SHIFT MAIN SWITCH)

(a) Disconnect the A23 transmission control ECU assembly connector.

(b) Disconnect the b1 transmission shift main switch (P position switch) connector.

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





Standard Resistance (Check for Open):





Text in Illustration





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

(e) Connect the transmission control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components