Page 818 - Workshop Manual - Tunland (2017)

04-132 DIAGNOSTICS - ENGINE CONTROL SYSTEM

04 P527-AUXILIARY INPUT / OUTPUT 2 CIRCUIT-VOLTAGE IS

ABOVE NORMAL OR SHORTED TO HIGH VOLTAGE POWER
SUPPLY

Description
1 . The ECM provides signals to output control circuit of the original equipment
manufacturer (OEM) to turn on and off the attachments from the OEM.The OEM
output control circuit varies with the different OEM. Some OEM may use a loop
connected to the ECM or use a loop connected to the engine cylinder or chassis.

DTC inspection
DTC DTC definition Trouble location
conditions
• The engine harness

Auxiliary input / or OEM output
output 2 circuit - controls solenoid
voltage is above valve is open
P527
normal or shorted to • OEM harness is
high voltage power shorted to power
supply supply
• ECM

Diagnosis Procedure

CAUTION

• The diagnosis procedure for this fault refer to Chapter 04 - diagnostic - engine
control system.