Toyota RM787U, Service And Repair Manual

Page: 310 / 1976

BE6653
A05306 I15000
START
ACMG
(+)
(-)
ECM Terminals
Z18060
1
5
2
3
1
2
3 5
- DIAGNOSTICS AIR CONDITIONING SYSTEM
DI-777
931
Author: Date:
2001 SIENNA (RM787U)
INSPECTION PROCEDURE
1 Check voltage between terminal ACMG of ECM and body ground.
CHECK:
(a)
Start engine.
(b) Push AUTO SW.
(c) Measure voltage between terminal ACMG of ECM con-
nector and body ground when A/C switch is On and OFF.
OK:
A/C switch Voltage
ON 10 - 14 V
OFF 0 V
NG Go to step 5.
OK
2 Check magnetic clutch relay.
PREPARATION:
Remove magnetic clutch relay from engine room J/B.
CHECK:
Check continuity between each pair of terminals shown below
of magnetic clutch relay.
OK:
Tester connection Specified condition
1 - 2 62.5 - 90.9
Ω
3 - 5 No continuity
PREPARATION:
Apply battery positive (+) voltage between terminals 1 and 2.
CHECK:
Check continuity between terminals 3 and 5.
OK:
Continuity exists.
NG Replace magnetic clutch relay.
OK