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IM-20 IMMOBILIZER (DIAGNOSTICS) DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) Step Value Yes No 1 CHECK POWER SUPPLY CIRCUIT OF IMM ECM. 3) Measure voltage between IMM ECM har- ness connector terminal and chassis Connector & terminal (B141) No. 10, No.11 (+) — Chassis −−−− ): Does the measured value exceed the spec- 10 V Check harness for 2 CHECK POWER SUPPLY CIRCUIT OF IMM ness connector terminal and chassis Connector & terminal (B141) No. 12 (+) — Chassis ground ( −−−− ): Does the measured value exceed the spec- 10 V Check harness for 3 CHECK GROUND CIRCUIT OF IMM ECM. harness connector terminal and chassis Connector & terminal (B141) No. 2, No.3 — Chassis ground: Is the measured value less than the speci- 10 Ω Repair open circuit 4 CHECK HARNESS BETWEEN IMM ECM and IMM ECM. 2) Measure resistance between IMM ECM harness connector terminal and ECM har- Connector & terminal H4 non-TURBO without OBD model (B141) No. 1 — (B135) No. 22: H4 Non-TURBO with OBD model (B141) No. 1 — (B137) No. 18: H6 and H4 TURBO models (B141) No. 1 — (B135) No. 5: Is the measured value less than the speci- 10 Ω Repair open circuit |