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DTC P1600 EMC BATT Malfunction
CIRCUIT DESCRIPTION
Battery voltage is supplied to terminal BATT of the ECM even when the ignition switch is OFF for use by
the diagnostic trouble code memory and air–fuel ratio adaptive control value memory, etc.
Diagnostic Trouble Code Detecting Condition
DTC No.
P1600
Open in back up power source circuit.
HINT: If DTC P1600 appear, the ECM does not store another diagnostic trouble code.
DIAGNOSTIC CHART
Check voltage of terminal BATT.
Check EFI fuse.
Check and repair harness or connector between battery,
EFI fuse and ECM.
WIRING DIAGRAM
1MZ–FE ENGINE
–
CIRCUIT INSPECTION
Open in back up power source circuit.
ECM
Trouble Area
Check and replace ECM.
Check for short in all the harness and
components connected to EFI fuse.
EG2–559
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Table of Contents
Troubleshooting
Need help?
Do you have a question about the 1 MZ–FE and is the answer not in the manual?
Questions and answers
Hacia donde apunta el pistón y como se colocan los anillos en un motor Toyota 3.0 1mzfe?
The piston in a Toyota 3.0 1MZ-FE engine should be oriented with the front marks of the piston and connecting rod aligned. The piston pin should be pushed in with the thumb, and a new snap ring should be installed on the other end, ensuring the snap ring’s end gap is not aligned with the pin hole cutout portion of the piston.
For ring installation:
1. Install the oil ring expander and two side rails by hand.
2. Use a piston ring expander to install the two compression rings with the code mark facing upward. The code marks are:
- No.1: 1R or T
- No.2: 2R or 2T
3. Position the piston rings so that the ring ends are not aligned.
This answer is automatically generated
power steering high pressure line repair instructions