TROUBLE DIAGNOSES — Diagnostic Procedure 5 (Cont'd) — 5-1 power/ground & 5-2 magnet-clutch indicator
HA-80flowchartPin 15 = R/L illumination feed; pin 16 = R/Y illumination ground; pins 12/14 = A/C indicator LED (polarity-sensitive continuity test).
Diagnostic Procedure 5 (Cont'd)
Diagnostic Procedure 5-1 (Cont'd) — illumination power + ground
1
(From previous page — branch A)
2
[B] CHECK POWER SUPPLY FOR ILLUMINATION WITH LIGHTING SWITCH ON. Do approx. 12 volts exist between push control unit harness terminal No. 15 and body ground?
N.G.
CHECK POWER SUPPLY FOR A/C ILLUMINATION SYSTEM. Refer to Illumination/Wiring Diagram in EL section.
O.K.
3
[C] CHECK BODY GROUND CIRCUIT FOR ILLUMINATION. Does continuity exist between push control unit harness terminal No. 16 and body ground?
O.K.
4
Replace control amp. built-in push control unit.
DIAGNOSTIC PROCEDURE 5-2
Diagnostic Procedure 5-2 — A/C indicator does not come on
1
CHECK MAGNET CLUTCH OPERATION. Does magnet clutch operate normally when engine ON, A/C switch, fan switch are ON?
N.G.
Go to Diagnostic Procedure 4.
O.K.
2
[A] Check circuit continuity of L.E.D. (across push control unit pins 12 and 14).
N.G.
3
Replace control amp. built-in push control unit.
NOTE
If the result is N.G. after checking circuit continuity, repair harness or connector.