Special Service Tool
The actual shapes of the tools may differ from those illustrated here.

Commercial Service Tool

Sealant and/or Lubricant

PrecautionHVAC branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the A/C auto amp. for
damage, bend and loose connection (unit
side and connector side).
2.CHECK HARNESS FOR OPEN CIRCUI ...
Power supply routing circuit
Wiring Diagram -Battery Power Supply -
Wiring Diagram -Accessory Power Supply -
Wiring Diagram -Ignition Power Supply -
Fuse
If fuse is blown, be sure to eliminate cause of malfunction before
installing new fuse.
U ...
Diagnosis and repair work flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom
(the condition and the environment
when the incident/malfunction occurred) using the "Diagnostic Work Sheet".
(Refer to EC-12, "Diagnostic ...