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AV-124 < DTC/CIRCUIT DIAGNOSIS > [MONOCHROME DISPLAY - W/ BOSE] STEERING SWITCH 3. CHECK HARNESS BETWEEN COMBINATION SWITCH (SPIRAL CABLE) AND AUDIO UNIT 1. Disconnect audio unit connector M135. 2. Check continuity between audio unit harness connector M135 and combination switch (spiral cable) har- ness connector M30. 3. Check continuity between audio unit connector M135 and ground. Are the continuity results as specified? YES >> GO TO 4. NO >> Repair harness. 4. COMBINATION SWITCH (SPIRAL CABLE) CHECK 1. Check continuity between combination switch (spiral cable) har- ness connector M30 (A) and M88 (B). Does the combination switch (spiral cable) check OK? YES >> GO TO 5. NO >> Replace combination switch (spiral cable). Refer to SR-15, "Removal and Installation" . 5. CHECK HARNESS BETWEEN BLUETOOTH ® CONTROL UNIT AND AUDIO UNIT 1. Disconnect audio unit connector M132. ® control unit harness connector B131 and audio unit harness con- nector M132. 3. Check continuity between Bluetooth ® control unit connector B131 and ground. Are the continuity results as specified? YES >> GO TO 6. Connector Terminal Connector Terminal Continuity M135 23 M30 24 Yes 24 31 30 33 Connector Terminal — Continuity M135 23 Ground No 24 30 A B Continuity Connector Terminal Connector Terminal M30 24 M88 14 Yes 31 15 33 17 ALNIA0931GB Connector Terminal Connector Terminal Continuity B131 17 M132 6 Yes 18 16 19 15 Connector Terminal — Continuity B131 17 Ground No 18 19 |