Toyota Camry Manual page 1218

2 Check compressor lock sensor.
Reference: Inspection using oscilloscope
LOCK IN Signal Waveform
0 V
20 msec./Division (Idling)
OK
3 Check harness and connector between A/C compressor lock sensor and ECM
(See page IN–31).
OK
Check and replace ECM (See page IN–31).
DIAGNOSTICS
PREPARATION:
Disconnect the compressor lock sensor connector.
2
1
CHECK:
Measure resistance between terminals 1 and 2 of the compres-
sor lock sensor connector.
OK:
N15622
During cranking or idling, measure voltage between terminals
LOCK IN and E1 of the ECM.
HINT:
The correct waveform appears as shown in the illustration on
the left.
N02774
– ENGINE (5S–FE)
Resistance: 65 – 125 Ω at 20°C (68°F)
NG Replace compressor lock sensor
(See page AC–40).
NG Repair or replace harness or connector.
Author :
DI–191
Date :
426