Diagnosis Procedure
1.
CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
A/C amp.
Is the inspection result normal?
.
Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
Disconnect the connector of A/C amp..
Check the resistance between the A/C amp. harness connector terminals.
A/C amp. harness connector
Resistance (Ω)
Connector No.
Terminal No.
M55
50
70
Approx. 54 – 66
Is the measurement value within the specification?
.
Repair the A/C amp. branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the A/C amp.. Refer to the following.
Automatic air conditioning:
Diagnosis Procedure
Is the inspection result normal?
(Present error)
Replace the A/C amp.. Refer to the following.
Automatic air conditioning:
A/C AMP. REMOVAL AND INSTALLATION
(Past error)
Error was detected in the A/C amp. branch line.
Repair the power supply and the ground circuit.