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ZC6008760036 Connector: C-109, C-114, C-120 C-114 C-120 C-109 (B) ZC600878000 Connector: C-303, C-309, C-315 C-303 C-309 (B) C-315 CIRCUIT OPERATION TROUBLESHOOTING HINTS ⦆ Malfunction of the power transistor ⦆ Malfunction of the blower motor ⦆ Malfunction of the A/C-ECU ⦆ Damaged harness wires or connectors DIAGNOSIS Required Special Tools: ⦆ MB991223: Harness Set ⦆ MB992006: Extra Fine Probe STEP 1. Check blower motor connector C-114 for loose, Q:Is blower motor connector C-114 in good condition? YES: Go to Step 2. NO: Repair or replace the connector. Refer to GROUP 00E, Harness Connector Inspection P.00E-2.The blower motor STEP 2. Measure the voltage at blower motor connector (1) Disconnect blower motor connector C-114, and measure the (2) Turn the ignition switch to the "ON" position. (3) Turn the blower switch to the "Maximum air volume" position. AIR CONDITIONING 55A-75 MANUAL A/C DIAGNOSIS |