Component Tests and General Diagnostics
Main Power Supply and Ground Circuit CheckPOWER SUPPLY CIRCUIT CHECK FOR AUTO A/C SYSTEM
Check power supply circuit for auto air conditioning system.
Refer to "POWER SUPPLY ROUTING" in EL section and Wiring Diagram.
AUTO AMP. CHECK
Check power supply circuit for auto amp. with ignition switch ON.
Measure voltage across terminal No. 1, 2, 11 and body ground.
Check body ground circuit for auto amp. with ignition switch OFF.
Check for continuity between terminal No. 5, 42 and body ground.
CONTROL UNIT CHECK
Check power supply circuit for control unit with ignition switch ON.
Measure voltage across terminal No.62 and body ground.
Check body ground circuit for control unit with ignition switch OFF.
Check for continuity between terminal No. 61 and body ground.