Vehicle Platform: OSPREY / AMP ECU Name: PEPS DTC Troubleshooting Data Version: 1.2 Date: 29 Mar 2017 Author: Rajasekhara Reddy Page: 19 of 369 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. P0604 - 00:-Internal Control Module Random Access Memory (RAM) Error- no sub type information Overview:- ISO Code P0604 - 00 Customer Symptom PEPS will probably not function or will function intermittently or partially Fault Effects (On Vehicle) N/A Lamp Status (If Any) None Fault Detection Condition Fault logged in the event of RAM error Normal Operating Condition Normal operating range:- ECU will be awake from 6V to 16 V. Full assistance is b/w 11.5 to 16 volts. Reduced assistance is b/w 9 to 11.5 V Probable Trouble Area PEPS internal damage Healing Condition N/A Table 4:- P0604 - 00 overview details Component Details:- N/A Preliminary Checks:- 1. Voltage at the battery terminals should be greater than 11.5V. 2. PEPS power supply connector should have greater than 11.5V for full assistance. 3. Check battery cable and PEPS connector terminals for damage. 4. Check PEPS ECU for pin bend/damage. 5. Alternator output voltage should be between 13.5 V to 14.5 V in engine running condition.
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