Back-up Light Circuit [12/2014 - ]: Procedure
- CHECK DTC OUTPUT (HYBRID CONTROL SYSTEM)
- Check for DTCs. Refer to DTC CHECK/CLEAR [12/2014 - ]
.
OK
Hybrid control system DTCs are not output.
B → See step 7
A: Go to next step
- Check for DTCs. Refer to DTC CHECK/CLEAR [12/2014 - ]
.
- INSPECT BKUP LP RELAY
- Remove the BKUP LP relay from the No. 2 engine room relay block and No. 2 junction block assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 3 - 5 Voltage is not applied between terminals 1 and 2 10 kΩ or higher 3 - 5 Voltage is applied between terminals 1 and 2 Below 1 Ω TEXT IN ILLUSTRATION*a Component without harness connected
(BKUP LP Relay)
NG → REPLACE BKUP LP RELAY
OK: Go to next step
- Remove the BKUP LP relay from the No. 2 engine room relay block and No. 2 junction block assembly.
- CHECK HARNESS AND CONNECTOR (BKUP LP RELAY - IG1 NO. 1 RELAY AND BODY GROUND)
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition Relay terminal 3 - Body ground Ignition switch ON (IG) 11 to 14 V - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Relay terminal 2 - Body ground Always Below 1 Ω
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- Measure the voltage according to the value(s) in the table below.
- CHECK HARNESS AND CONNECTOR (BKUP LP RELAY - BACK UP LIGHT LH AND BACK UP LIGHT RH)
- Disconnect the M5 rear combination light assembly LH connector.
- Disconnect the M6 rear combination light assembly RH connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Relay terminal 5 - M5-2 (B) Always Below 1 Ω Relay terminal 5 - M6-2 (B) Always Below 1 Ω Relay terminal 5 - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (BKUP LP RELAY - HYBRID VEHICLE CONTROL ECU)
- Disconnect the A39 hybrid vehicle control ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Relay terminal 1 - A39-2 (BL) Always Below 1 Ω Relay terminal 1 - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 6
- REPLACE HYBRID VEHICLE CONTROL ECU. Refer to REMOVAL [12/2014 - ]
- GO TO HYBRID CONTROL SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2014 - ]