Inspection Of System Amplifier Inspect Amplifier Circuit

(a) Disconnect the amplifier and inspect connector on the wire harness side as shown in the chart below. Test conditions:

(1) Ignition switch: ON

(2) Temperature control switch: MAX COOL

Check for

Tester connection

Condition

Specified value

Continuity

1 -G

Constant

Continuity

9 -

Constant

Continuiiy

Resistance*'

S- 2

Constant

Approx. 3 ktt

5 - 1Û

Constant

ApprQ*. É klJ

11 - 10

Constant

1.2 - 43 UÏ

Temperature control switch turned to MAX COOL

ApfxûX. 3 KÍJ

Voltage

7 ground

Constant

Battery voir as«

without AUTO A/C

models

HINT: Perform the following check only for vehicles with AUTO A/C. (b) Connect the connector to the amplifier and inspect connector from back side as shown in the chart below. Test conditions:

(1) Engine running

(3) Blower switch: HI

Check for

Tester connection

Condition

Specified value

Voltage

3 - ^ouTid

Temp. control switch turned to MAX HOT

Appro* OV"

Temp. control switch turned to MAX COOL

Ajiprox. 6 V

4 - 5^H3UTld

Temp. control switch turned to MAX HOT

Appro* & V

Temp. control switch turned to MAX COOL

ApprOM. 0 V*1

: Voltage becomes 0

V when switch is turned, then soon returns to 5 V.

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