Dtc P0885 Tcm Power Relay Control Circuit (Open). Corolla ZZE150

Трансмиссия. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Механическая Трансмиссия 'Multimode' C53A. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT AMT RELAY

INSPECT TCM (+BM TERMINAL INPUT VOLTAGE)

CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND)

INSPECT TCM (MREL TERMINAL OUTPUT VOLTAGE)

CHECK HARNESS AND CONNECTOR (TCM - AMT RELAY)

CHECK HARNESS AND CONNECTOR (BATTERY - AMT RELAY)

CHECK HARNESS AND CONNECTOR (AMT RELAY - BODY GROUND)

DTC P0885 TCM Power Relay Control Circuit (Open)

DTC P0887 TCM Power Relay Control Circuit (Short)


DESCRIPTION

The multi-mode manual transaxle system has a dedicated power supply circuit. While the ignition switch is turned on (IG), the TCM outputs the power from the MREL terminal to operate the AMT relay. Then, the power is supplied to the +BM terminal of the TCM through the AMT relay. The voltage (+BM) is monitored and when it is low (6.29 V or less) despite the voltage being supplied to the MREL circuit, the TCM determines that there is a malfunction in the multi-mode manual transaxle system and sets a DTC. When the voltage (+BM) is high (6.29 V or more) although the voltage is not supplied to the MREL circuit, the TCM sets a DTC.

DTC No.
DTC Detecting Condition
Trouble Area
P0885
The TCM detects the following conditions simultaneously:
(1-trip detection logic)
  1. Voltage is supplied to MREL circuit
  2. +BM voltage is less than 6.29 V for 0.5 seconds
  1. AMT fuse
  2. AMT relay
  3. Open in MREL signal circuit
  4. Open in PGND signal circuit
  5. Open in +BM signal circuit
  6. TCM
P0887
The TCM detects the following conditions simultaneously:
(1-trip detection logic)
  1. No voltage is supplied to MREL circuit
  2. +BM voltage is more than 6.29 V for 0.5 seconds
  1. AMT relay
  2. Short in MREL signal circuit
  3. Short in PGND signal circuit
  4. Short in +BM signal circuit
  5. TCM

WIRING DIAGRAM


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии


INSPECTION PROCEDURE

1.INSPECT AMT RELAY


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Remove the AMT relay from the engine room R/B.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 - 5
    		Voltage is not applied between terminals 1 and 2
    		10 kΩ or higher
    3 - 5
    		Apply the battery voltage between terminals 1 and 2
    		Below 1 Ω

  1. Reinstall the AMT relay.



NG
REPLACE AMT RELAY
OK


2.INSPECT TCM (+BM TERMINAL INPUT VOLTAGE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Disconnect the TCM connector.

  1. Measure the voltage between the terminal of the TCM and the body ground when the ignition switch is turned on (IG) and off.

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A29-2 (+BM) - A29-8 (PGND)
    		Ignition switch off
    		Below 1 V
    A29-2 (+BM) - A29-8 (PGND)
    		Ignition switch on (IG)
    		11 to 14 V
    Result:
    Result
    		Proceed to
    NG
    		A
    OK
    		B

  1. Reconnect the TCM connector.



B
REPLACE TCM (Нажмите здесь)
A


3.CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Disconnect the TCM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A29-8 (PGND) - Body ground
    		Always
    		Below 1 Ω

  1. Reconnect the TCM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT TCM (MREL TERMINAL OUTPUT VOLTAGE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Measure the voltage between the terminal of the TCM and the body ground when the ignition switch is turned on (IG) and off.

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A34-5 (MREL) - Body ground
    		Ignition switch off
    		Below 1 V
    A34-5 (MREL) - Body ground
    		Ignition switch on (IG)
    		11 to 14 V


NG
REPLACE TCM (Нажмите здесь)
OK


5.CHECK HARNESS AND CONNECTOR (TCM - AMT RELAY)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Disconnect the TCM connectors.

  1. Turn the ignition switch off.

  1. Remove the AMT relay from the engine room R/B.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    A34-5 (MREL) - AMT relay (1)
    		Always
    		Below 1 Ω
    A29-2 (+BM) - AMT relay (5)
    		↑
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    A34-5 (MREL) or AMT relay (1) - Body ground
    		Always
    		10 kΩ or higher
    A29-2 (+BM) or AMT relay (5) - Body ground
    		↑
    		10 kΩ or higher

  1. Reconnect the TCM connectors.

  1. Reinstall the relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK HARNESS AND CONNECTOR (BATTERY - AMT RELAY)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Remove the AMT relay from the engine room R/B.

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    AMT relay (3) - Body ground
    		Always
    		11 to 14 V

  1. Reinstall the AMT relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.CHECK HARNESS AND CONNECTOR (AMT RELAY - BODY GROUND)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Механическая Трансмиссия 'Multimode' C53A.Система Механической Трансмиссии

  1. Remove the AMT relay from the engine room R/B.

  1. Turn the ignition switch off.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    AMT relay (2) -Body ground
    		Always
    		Below 1 Ω

  1. Reinstall the relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM (Нажмите здесь)