P2532

L110 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P2532-772: Ignition Switch Run Position Circuit High

DTC P2532-772 - Ignition Switch Run Position Circuit High

DESCRIPTION

The hybrid vehicle control ECU monitors IGSW signals sent from the power source control ECU and detects a malfunction.

HINT: If DTC P2532-772 is detected, it will be possible to turn the vehicle off.

WIRING DIAGRAM

INSPECTION PROCEDURE
CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting, check the voltage at the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT: Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK DTC OUTPUT
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
(d) Check if DTCs are output.
Result:
The following DTC is output simultaneously.

NO -- CHECK FOR INTERMITTENT PROBLEMS
YES -- Continue to next step.
2. CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Select the following menu items: Body / (desired system) / DTC.
(d) Check if DTCs are output.
Result:
The following DTC is output simultaneously.

NG -- CHECK FUSES (ECU-IG RH, ECU-IG LH)
OK -- Continue to next step.
3. CHECK CAN COMMUNICATION SYSTEM (BUS CHECK)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Check "Bus Check".
Result:
The screen displays the skid control ECU.
OK -- CHECK HYBRID VEHICLE CONTROL ECU
NG -- Continue to next step.
4. CHECK FUSES (ECU-IG RH, ECU-IG LH)

(a) Remove the ECU-IG RH fuse from the cowl side J/B RH.

(b) Remove the ECU-IG LH fuse from the cowl side J/B LH.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:

(d) Install the fuses.
NG -- REPLACE FUSES
OK -- Continue to next step.
5. CHECK RELAY (RH-IG RELAY 1, LH-IG RELAY 2)
(a) Disconnect the cowl side J/B RH connectors.
(b) Disconnect the cowl side J/B LH connectors.

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

NG -- REPLACE RELAY
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - COWL SIDE J/B RH, LH)
(a) Disconnect the power source control ECU connector.
(b) Disconnect the cowl side J/B RH connector.
(c) Disconnect the cowl side J/B LH connector.
(d) Measure the resistance according to the value(s) in the table below.

Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - COWL SIDE J/B RH)
(a) Disconnect the air conditioning amplifier connector.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COWL SIDE J/B LH)
(a) Disconnect the skid control ECU connector.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- GO TO CAN COMMUNICATION SYSTEM AND MULTIPLEX COMMUNICATION SYSTEM
9. CHECK HYBRID VEHICLE CONTROL ECU

(a) Turn the power switch off.
(b) Disconnect the hybrid vehicle control ECU connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:

OK -- REPLACE HYBRID VEHICLE CONTROL ECU
NG -- Continue to next step.
10. CHECK RELAY (IG2 RELAY)
(a) Remove the IG2 relay from the engine room R/B No. 1.

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

NG -- REPLACE RELAY
OK -- Continue to next step.
11. CHECK POWER SOURCE CONTROL ECU
(a) Turn the power switch off.
(b) Connect the power source control ECU connector.

OK -- INSPECT STOP LAMP SWITCH ASSEMBLY
NG -- Continue to next step.
12. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - IG2 RELAY)

(a) Disconnect the power source control ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE POWER SOURCE CONTROL ECU
13. INSPECT STOP LAMP SWITCH ASSEMBLY

(a) Disconnect the A35 switch connector.
(b) Measure the resistance of the switch.
Standard resistance:

NG -- REPLACE STOP LAMP SWITCH ASSEMBLY
OK -- Continue to next step.
14. CHECK HARNESS AND CONNECTOR (STOP LAMP SWITCH ASSEMBLY - HYBRID VEHICLE CONTROL ECU)

(a) Turn the power switch off.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LAMP SWITCH ASSEMBLY - HYBRID VEHICLE CONTROL ECU)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - HYBRID VEHICLE CONTROL ECU OR EACH ECU)
15. CHECK FOR INTERMITTENT PROBLEMS
(a) Check for intermittent problems Check For Intermittent Problems.
YES -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
NO -- REPLACE HYBRID VEHICLE CONTROL ECU