HINT Codes other than code 54 may be output at this time but they are not

Hint codes other than code 54 may be output at this

This preview shows page 357 - 361 out of 584 pages.

HINT: Codes other than code 54 may be output at this time, but they are not relevant to this check. NG Replace front passenger airbag assembly. OK From the results of the above inspection, the malfunctioning part can now be considered normal. To make sure of this, use the simulation method to check.
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W04365 Airbag Sensor Assembly Ignition Switch Battery 2 1 5A 3 7 6 3 6 1 W–R L–R B–R ACC IG2 ALT AM1 AM2 CIG IGN 1N 1K 1N 1K ACC IG1 IG2 ST2 AM1 AM2 4 J15 Junction connector Instrument Panel J/B W 5 B–R 1B 1K 1K 1B 1 5 2A 100A 4 W–R B 2 1 2 W–B B–R B–G Engine Room J/B FL MAIN 3.0 W Fusible Link Block 15 16 II E1 F11 F6 F8 2L Instrument Panel J/B GR Instrument Panel J/B 1N 1J W–B 15A 30A 40A 10 1 1 2 DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM DI–359 511 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) DTC Normal Source Voltage Drop CIRCUIT DESCRIPTION The SRS is equipped with a voltage–increase circuit (DC–DC converter) in the airbag sensor assembly in case the source voltage drops. When the battery voltage drops, the voltage–increase circuit (DC–DC converter) functions to increase the voltage of the SRS to normal voltage. The diagnosis system malfunction display for this circuit is different to other circuits–when the SRS warning light remains lit up and the DTC is a normal code, source voltage drop is indicated. Malfunction in this circuit is not recorded in the airbag sensor assembly, and the source voltage returns to normal, the SRS warning light automatically goes off. DTC No. Diagnosis (Normal) Source voltage drop. WIRING DIAGRAM DI0B7–01
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R05894 AB0117 H00001 Airbag Sensor Assembly LOCK Spiral Cable D Squib P Squib AB0119 W02766 H00041 ON Airbag Sensor Assembly ACC IG2 (+) (–) DI–360 DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM 512 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) INSPECTION PROCEDURE 1 Preparation. PREPARATION: (a) Disconnect negative (–) terminal cable from the battery, and wait at least 90 seconds. (b) Remove steering wheel pad (See page SR–11 ). (c) Disconnect connector of front passenger airbag assem- bly (See page RS–21 ). (d) Disconnect connector of airbag sensor assembly (See page RS–35 ). CAUTION: Store the steering wheel pad with the front surface facing upward. 2 Check source voltage. PREPARATION: (a) Connect negative (–) terminal cable to battery. (b) Turn ignition switch ON. CHECK: Measure voltage at IG2 or ACC on sensor and operate electric system. (defogger, wiper, headlight, heater blower, etc.) OK: Voltage: 10 – 14 V NG Check the harness between battery and airbag sensor assembly, and check the battery and charging system. OK
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H00003 ON DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM DI–361 513 AuthorĂ: DateĂ: 1997 LEXUS ES300 (RM511U) 3 Does SRS warning light turn off? PREPARATION: (a) Turn ignition switch to LOCK. (b) Connect steering wheel pad connector. (c) Connect front passenger airbag assembly connector.
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