DTC Code | DTC Name |
---|---|
P0885 | TCM Power Relay Control Circuit / Open |
P0887 | TCM Power Relay Control Circuit (Short) |
DESCRIPTION
The multi-mode manual transaxle system has a dedicated power supply circuit. When the ignition switch is turned to ON, the TCM outputs the power from the MREL terminal to operate the MMT relay. Then, the power is supplied to the +BM terminal of the TCM through the MMT relay. The voltage (+BM) is monitored and when it is low (4.00 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 stores a DTC. When the voltage (+BM) is high (4.00 V or more) although the voltage is not supplied to the MREL circuit, the TCM stores the DTC.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Memory |
---|---|---|---|---|---|---|
P0885 | TCM Power Relay Control Circuit / Open |
The TCM detects the following conditions simultaneously: (1-trip detection logic)
|
|
Does not come on | Comes on | DTC stored |
P0887 | TCM Power Relay Control Circuit (Short) |
The TCM detects the following conditions simultaneously: (1-trip detection logic)
|
|
Does not come on | Comes on | DTC stored |
WIRING DIAGRAM
*a | FL MAIN |
*b | Battery |
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
INSPECT AMT RELAY
Remove the AMT relay from the engine room relay block and junction block assembly.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||
---|---|---|---|---|---|---|---|---|
|
Reinstall the MMT relay.
Result | |||
---|---|---|---|
|
NG |
REPLACE AMT RELAY |
OK |
INSPECT TCM (+BM TERMINAL INPUT VOLTAGE)
Disconnect the TCM connector.
*a |
Front view of wire harness connector (to TCM) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | ||||||
---|---|---|---|---|---|---|
|
B | Нажмите здесь |
GO TO STEP 8 |
A |
CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND)
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT TCM (MREL TERMINAL OUTPUT VOLTAGE)
Reconnect the TCM connectors.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
*a |
Component with harness connected (TCM) |
Standard Voltage | ||||||||
---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG | Нажмите здесь |
GO TO STEP 8 |
OK |
CHECK HARNESS AND CONNECTOR (TCM - AMT RELAY)
Disconnect the TCM connectors.
Remove the AMT relay from the engine room relay block and junction block assembly.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (BATTERY - AMT RELAY)
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (AMT RELAY - BODY GROUND)
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE TCM
Replace the TCM.
for LHD: Click here Нажмите здесь
for RHD: Click here Нажмите здесь
Result | ||
---|---|---|
|
NEXT |
PERFORM INITIALIZATION
Perform the initialization and learning procedure.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT |
END |