Page 241 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 187

IN
d. Take a multimeter to measure the continuity of No. 30
and No. 87 terminal of compressor relay R10.
Standard resistance: DI

Storage battery voltage Standard value
EG
Battery positive pole connecting to

Terminal 85 and negative pole About 0Ω
TR
connecting to Terminal 86

Check if the result is ok? AX
Yes>go to Step 4.
No> Replace the same specification of compressor relay. FR

4. Check compressor to compressor relay harness and connector
a. Ignition switch:LOCK. ST

b. Disconnect compressor connector F028.
c. Ignition switch: ON. BR

d. Take a multimeter voltage gear to measure the voltage
between No. 1 terminal of B028 and grounding. BW
Standard voltage:

Multimeter connecting terminal Standard value EL

F028(1)-grounding Storage battery voltage

Check if the result is ok?

Yes> Replace the compressor.

NO>go to Step 5.

5. Check compressor relay to A/C pressure switch harness and connector

a. Ignition switch:LOCK.

b. Disconnect the connector B073 of AC pressure switch.

c. Take a multimeter to measure resistance between No. 1
terminal of B073 and No. 86 pin of compressor relay R10.

Standard resistance:

Multimeter connecting terminal Standard value

B073(1)-R10(86) About 0Ω

DI-187