Lexus NX manuals

Lexus NX: Inspection

Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (hybrid / Battery Control) / Hv Relay Assembly / Inspection

INSPECTION

PROCEDURE

1. INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY

(a) Inspect SMRB:

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

x2-1 (+) - t5-1 (CBI)

Auxiliary battery voltage not applied between terminals y1-4 (SMRB) and y1-2 (GND)

10 kΩ or higher

Auxiliary battery voltage applied between terminals y1-4 (SMRB) and y1-2 (GND)

Below 1 Ω

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

y1-4 (SMRB) - y1-2 (GND)

-40 to 80°C (-40 to 176°F)

20.6 to 40.8Ω

If the result is not as specified, replace the hybrid battery junction block assembly.

*1

x2-1 (+)

*2

t5-1 (CBI)

*3

y1

*a

Component without harness connected

(Hybrid Battery Junction Block Assembly)

(b) Inspect SMRG:

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

x3-1 (-) - t6-1 (CEI)

Auxiliary battery voltage not applied between terminals y1-1 (SMRG) and y1-2 (GND)

10 kΩ or higher

Auxiliary battery voltage applied between terminals y1-1 (SMRG) and y1-2 (GND)

Below 1 Ω

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

y1-1 (SMRG) - y1-2 (GND)

-40 to 80°C (-40 to 176°F)

20.6 to 40.8Ω

If the result is not as specified, replace the hybrid battery junction block assembly.

*1

x3-1 (-)

*2

t6-1 (CEI)

*3

y1

*a

Component without harness connected

(Hybrid Battery Junction Block Assembly)

(c) Inspect SMRP:

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

x3-1 (-) - t6-1 (CEI)

Auxiliary battery voltage not applied between terminals y1-3 (SMRP) and y1-2 (GND)

10 kΩ or higher

Auxiliary battery voltage applied between terminals y1-3 (SMRP) and y1-2 (GND)

28.5 to 31.5 Ω

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

y1-3 (SMRP) - y1-2 (GND)

-40 to 80°C (-40 to 176°F)

140 to 290Ω

If the result is not as specified, replace the hybrid battery junction block assembly.

*1

x3-1 (-)

*2

t6-1 (CEI)

*3

y1

*a

Component without harness connected

(Hybrid Battery Junction Block Assembly)

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