Inspection Procedure

1. Turn the ignition switch to the ON position.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   AS1G (H32-34) - AS1 (H32-27)	2.3 to 3.1 V

NG: GO TO step   4 

Fig 1: Identifying Hybrid Vehicle Control ECU H32 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position.
3. Select the following menu items: DIAGNOSIS / OBD/ MOBD / HV ECU / DTC INFO / CLEAR CODES.

NEXT: Go to next step 

1. Turn the ignition switch to the ON position.
2. Select the following menu items: DIAGNOSIS / OBD/ MOBD / HV ECU / DTC INFO / CURRENT CODES.
3. Read output DTCs. (See DTC CHECK / CLEAR )

   Result: 

   P3137-348 and P3138-349 are output. 

NO: CHECK FOR INTERMITTENT PROBLEMS 

YES: REPAIR HYBRID VEHICLE CONTROL ECU 

1. Turn the ignition switch off.
2. Disconnect the C17 circuit breaker sensor No.1 connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   SIF- (C17-1) - SIF+ (C17-2)	0.65k to 1.0 kΩ at 20°C (68°F)

NG: REPLACE CIRCUIT BREAKER SENSOR NO.1 

Fig 2: Identifying C17 Circuit Breaker Sensor No.1 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR